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Summer Camps 2021

YSI's 2021 Summer Science Camp registration officially opens March 1, 2021! YSI adheres to new health and safety county- and state-mandated protocols to keep your camper safe and healthy. If you have questions, please email camp@ysi-ca.org or call us at (408) 356-4945 x11. We look forward to seeing you this upcoming summer!
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Following All State and County Guidelines
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An Unforgettable Experience With Nature
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Friendly Hiking With Each for In-Person Camps
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Science Education With Every Summer Camp
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Located in Beautiful Vasona Lake County Park
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Science Program Experts Since 1953
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Summer Science Camps run from June 14-August 13
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Early Registration & Multi Session Discounts
We make science camps fun! YSI summer camp culture is infused with games that foster social skills and playful science camp activities that bring YSI summer camp spirit to life! Our summer science camps incorporate hiking, games, and arts & crafts and feature special programs with our live animal ambassadors.

Most importantly, our exceptional summer camp staff make our summer camps unique. We carefully screen and interview to get high quality summer camp staff. Our team includes passionate college students, classroom teachers, and full-time YSI educators. Our summer camp staff receives training to ensure child safety, content knowledge, and customer service. Our staff are trained in CPR and first aid. Additionally, all staff are trained on state and county protocols for COVID-19. Our summer camp group sizes maintain a ratio of 1:7. Each camp carries a dedicated cell phone during each day for prompt communication, if needed.
Select Your Child's Grade Level for the 2021-2022 School Year
(Science camp weeks sold separately)
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Investigators Camp: $224

Take a more in-depth look at some of the invisible forces that act on the world around you with hands-on science! Join fellow campers as we investigate sound, the power of magnetic fields, and buoyancy through scientific experimentation. Meet an isopod and learn the critical role they play in keeping the environment in balance.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 28 - July 2August 2-6
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Discovery Camp: $224

Join the fun and discover the facts behind many natural wonders using hands-on science. How do birds fly? Why do animals move the way they do? Are there different ways to make bubbles? Discover the science behind these questions and more through your journey through YSI Discovery Camp.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 21-25July 19-23
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Curiosity Camp: $168

Let your curiosity run wild with hands-on science activities, crafts, and guided exploration. Learn about flowers and leaves, then take a close look at worms and insects! Explore and understand what we have in common with other animals. Actively experiment with solids and liquids to learn more about the states of matter. Explore your senses and then answer the question - can the color we see affect how we taste?

Note: July 6-9 week is only a 4-day week due to July 4th holiday weekend.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
July 6-9
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Explorers Camp: $224

Delve into the world of energy by experimenting with sound and motion. Make musical instruments and do hands-on experiments demonstrating how sound travels. Meet a toad and analyze the difference between living and non-living things. It’s time to examine, experiment, and explore!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
July 12-16August 9-13
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Questers Camp: $224

Begin to develop skills used by scientists. Learn different ways to categorize what is around us, and then sort items we find into categories. Learn about different mixtures - can colors be mixed? How about oil and water? Learn about different types of rocks and how to sort them into different categories (now that you’re an expert at sorting!). What is wind, what’s in the wind? And how do plants use the wind to their advantage? Learn about evaporation, make a cloud, and more!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 14-18July 26-30
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Feathers, Fur, and Scales: $324

Dive into zoology with YSI! We will actively investigate different kinds of animals from head to toe & from the inside out. Examine bones, fur, feathers, claws, teeth, scales, and skeletons to learn more about animal adaptations. Together we will meet YSI’s live animals and get an up-close look at how these animals are built for survival.

Note: July 6-9 week is $260 and only a 4-day week due to July 4th holiday weekend.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for July 6-9.

Click available dates below to register online now!

You will be redirected to complete your payment and registration.
August 9-13
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Radical Reptiles: $324

During the week, campers will have the chance to meet and touch YSI’s wide variety of live reptiles. Together we will take an up-close look at reptilian anatomy as we learn the proper techniques scientists use to examine skeletons, skins, shells, and fossils.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for June 14-18 and July 12-16.
June 14-18July 12-16
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Nature Sleuths: $324

Learn to use your senses and the tools of a scientist to look more deeply into the mystery of the world around us. YSI’s favorite camp mascot, Peppermint Bob, will help us understand scents and the sense of smell while more activities explore other senses. Experience the scientific method with a simple chemical experiment. Learn to take fingerprints and follow a footprint trail. Decode a message and later transform yourself into a world-class detective! Finally, campers will combine their knowledge and apply these tools and insights to solve a natural mystery.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for June 21-25 or August 2-6.
June 21-25August 2-6
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Curious Chemists: $324

Microscopes, lab coats, and test tubes, oh my! Prepare yourself for a week of experimentation and creation. Learn about molecules and bonds as you make slime and perhaps see the famous Elephant Toothpaste experiment. Learn about chemical reactions and changes of state. Make your own chemical reaction and create rocket power! Find out what molecules have to do with bubbles and scent. Let your curiosity run wild!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for July 19-23.
July 19-23
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Water World: $324

Conduct hands-on investigation of water properties by dropping, spraying, heating, freezing, and mixing it. Explore the local watershed and meet live aquatic animals. Campers will develop a better understanding of water as both a liquid and as an ecosystem.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Camp is currently full. Join waitlist for June 28-July 2, and July 26-30.
June 28 -July 2July 26-30
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Bike Hike: $344

Biology and ecology are as easy as riding a bike! Practice and improve your riding skills, learn trail etiquette, and bicycle safety. Delve into the mechanics of various bike parts with hands-on experiments. As we ride through Vasona Park and along Los Gatos Creek, we’ll discuss facts and concepts about the environment we’re in and the creatures that live there. Participants must bring their own helmet and two-wheel bicycle (no training wheels) and be comfortable riding. Please Note: YSI cannot provide overnight bike storage, so please plan accordingly.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for June 21-25.
June 21-25
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Vast Voyagers: $324

Send your child blasting into space with this week-long program! We will discover the many differences and similarities between the planets in our solar system plus their moons. We will also talk about many different galaxies, the ingredients of a star, and so much more during this fun-filled voyage together. Plus, your child will do many hands-on projects that they will bring home to share with you. It’ll be a blast-off!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
July 26-30August 9-13
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Groovy Gardening $324

Do you have a love for gardening and want to learn some tricks of the trade? YSI has you covered! Spend the week with us and get your hands dirty while gaining some knowledge of horticulture science! Here are some examples of what you will learn during this week of camp:

• Native vs. Non-Native Plants
• Different Types of Soils for Different Plants
• Helpful Insects and Other Garden Insects
• How to Get Herbs to Root
• Composting and Mulch
• How to Pot Plants to Take Home!

We will also take nature walks around beautiful Lake Vasona and identify several beneficial plants that are great to have in your garden to provide food and shelter for other creatures in nature!

Note: July 6-9 week is $260 and only a 4-day week due to July 4th holiday weekend.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 14-18July 6-9
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Fishy Fun: $324

Explore our watershed and examine how its health affects the fish that live there. Together we will learn the unique traits that our aquatic friends possess to survive and thrive in the water. Learn how to fish, fishing safety and etiquette, and then go fishing! YSI provides fishing poles & bait, so grab your hat & sunglasses and get ready to go fishing!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for August 2-6.
Aug 2-6
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Phunky Physics: $324

Unlock the secrets to the physical realm with physics! Discover physics principles while making music, creating and flying airplanes and rockets, and conducting experiments with magnetism, electricity, light, and more. Amaze your friends with physics magic tricks!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for July 19-23.
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Mystery Solving Science: $324

Examine evidence under a microscope. Use chemistry to identify mysterious substances. Learn techniques anthropologists use to uncover bones and find clues. Discover hidden messages and decipher secret codes. Then, use your newly developed skills to solve a mystery!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 28 - July 2July 12-16
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Bike Explorers: $344

Explore our park and beyond on two wheels! Practice and improve your bike skills, learn how to keep your bike in good working order, and do some basic repairs while learning some biking physics. You’ll also do an experiment to see how helmets protect us and make gyroscopes. Stop along the Los Gatos Creek Trail and discover the many habitats there. Participants must bring their own helmet and two-wheel bicycle with gears and be comfortable riding up and downhills. Please Note: YSI cannot provide overnight bike storage, so please plan accordingly.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for June 14-18.
June 14-18
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Nature Magnified : $324

Immerse yourself in all sizes of science from the microscopic level to outer space. Learn about animals that inspire innovation and their biology. Explore the rapidly growing world of nano-technology. Conduct experiments in nature, use powerful microscopes to observe water samples and investigate big and small worlds.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 21-25August 2-6
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Something's Fishy: $344

Explore the aquatic environment and search the creek for critters. Dissect a fish and learn more about the unique adaptations that allow them to survive in water. Cast a line and go fishing in Vasona Lake! YSI provides the fishing poles & bait, so grab your hat & sunglasses and get ready to go fishing!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

This camp is currently full. Join waitlist for July 12-16.
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Wildlife Wonders $324

Actively investigate animal bodies and behaviors with art, experiments, and games. Meet live animals, handle specimens, and learn to identify adaptations that help species survive. It’s going to be a wildly wonderful week of wildlife!

Note: July 6-9 week is only a 4-day week due to July 4th holiday weekend. Price is $260.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
July 6-9July 26-30
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Geology Rocks! $324

Learn about the study of our beautiful planet Earth and its many natural wonders! This week, we will explore a variety of topics that cover our most important problems, from energy, water, and mineral resources; the environment; climate change; and natural hazards like landslides, volcanoes, earthquakes, and floods. Then we will evaluate how Earth’s materials, structures, processes, and organisms have changed over time from these natural events. Join us on this wonderful exploration, and end your week leaving as experienced Geologists!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
June 28 - July 2July 19-23August 9-13

Frequently Asked Questions

Are there multi-session discounts?
10% off 3rd week plus all additional weeks. For Example: If you are registering your child for 4 (non-sequential) weeks, then the first two weeks will be full-priced science camps, and the following two weeks will be 10% off!

Are there multi-person discounts?
5% off all camp weeks for the 2nd child registered plus all additional children registered. For Example: If you are registering four children, the 1st child registered will have a full-priced science camp, & the following three registered will each have 5% off their science camps!

Is there a discount for early registration?
Yes, registrations made by April 1, 2021 will receive $10.00 off their registration. Coupon code: EBD2021

What ages can attend YSI Summer Science Camp?
YSI’s Summer Science Camps are weekly, half-day camps that run from 9:00am-11:30am for our preschool and kindergarten camps and from 9:00am-1:00pm for our campers entering 1st-6th grades. All preschool campers must have a birth date before January 1, 2018, and be able to use the restroom independently.

Where and when is YSI Summer Science Camp?
All YSI Summer Science Camps are located in the beautiful Vasona Lake County Park.

Does YSI have an immunization policy?
Yes. Click here to read our immunization policy.

What steps are YSI staff taking during the COVID-19 pandemic to keep my camper safe?
YSI is following all county and state guidelines which include but are not limited to:

• Required masks for anyone present at YSI
• Social distancing of 6 feet or more
• Frequent sanitizing/disinfecting of supplies
• Personal kit for each child to prevent sharing of items
• All campers will have a mandatory daily temperature check.

YSI requires every family to do a verbal COVID questionnaire each day before camp. For more information on how we are committed to keeping your camper safe, please contact camp@ysi-ca.org or call 408-356-4945, ex. 11.

Does YSI have a scholarship option? 
Yes, YSI does have this option available to families who need financial assistance. To apply, please click here.

I want to donate to YSI’s Scholarship Fund. How do I proceed?
By clicking on the camp of choice, you will see options under “sessions” to donate a designated amount. All donations made to the scholarship fund are tax-deductible.

Does YSI have a cancellation policy?
For YSI Summer Science Camp cancellations, the following rules apply: 
• 20% of total program fees plus a $50 administrative fee are non-refundable for cancellations made at any time.
• Cancellations between May 10 and two weeks prior to your camp start date result in a refund of 50% of total program fees, in addition to a $50 administrative fee.
• Cancellations within two weeks of your camp start date are non-refundable. Cancellations due to medical emergencies will be assessed on an individual basis.
• If federal, state or county COVID-19 guidelines change and prevent YSI from operating our Summer Science Camp programs, registrants are able to donate program fees, defer program fees to our ACTIVE account to be used as a credit for another camp, or receive a full refund. Scholarship donations are non-refundable.

What grade level of camp should I register my child in?
Your camper should be registered for the grade level they will be entering during the fall season of 2021/2022. For example, if your camper is currently finishing 4th grade, you would register your camper for the YSI camps that are 5th-6th grade level.
Select CAMP for the 2020-2021 School Year
(View YSI Protocol)
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Geology - The Study of Earth: $299

Learn about the study of our beautiful planet Earth and its many natural wonders! During this week we will explore a variety of topics that cover our most important problems. From energy, water, and mineral resources; the environment; climate change; and natural hazards like landslides, volcanoes, earthquakes, and floods. Then we will evaluate how Earth's materials, structures, processes and organisms have changed over time from these natural events. Join us on this wonderful exploration, and end your week leaving as experienced Geologists!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
October 12 - 16
Rocket icon

Vast Voyagers Space Program: $299

Send you child blasting into space with this week long program! We will discover the many differences and similarities between the planets in our solar system plus their moons. We will also talk about many different galaxies, the ingredients of a star, and so much more during this fun filled voyage together. Plus your child will do many hands- on projects that they will bring home to share with you. It'll be a blast off!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
November 2 - 6
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Feathers, Fur, and Scales: $129

Dive into zoology with YSI! We will actively investigate different kinds of animals from head to toe, and from the inside out. Examine bones, fur, feathers, claws, teeth, scales, and skeletons to learn more about animal adaptations. Together we will meet YSI’s live animals and get an up-close look at how these animals are built for survival.

This is a 4 day week due to Veteran's Day on Wednesday.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
November 9 - 13
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Boomin Biomes: $149

Have you ever heard the word biome? Biomes are a community of plants and animals that have common characteristics for the environment they exist in. They can be found over a range of continents. Biomes are distinct biological communities that have formed in response to a shared physical climate.

During your week with YSI, you will learn all about the variety of natural habitats and the animals that live among them. You'll also talk about what key differences these animals have to help them survive in that specific biome that makes them so special! You'll have a boomin' time!

Design, build, and test different ideas to create robots that you can take home to share with your family! Robots can be extremely complex creations, but they can also be very simple! Our instructors will be working very closely with you to make some really awesome creations!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
November 16 - 20
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Rockin Robotics: $179

Design, build, and test different ideas to create robots that you can take home to share with your family! Robots can be extremely complex creations, but they can also be very simple! Our instructors will be working very closely with you to make some really awesome creations!

This is a 3 day program, due to the Thanksgiving Holiday.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
November 23 - 25
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Wild and Whacky Weather: $149

Have you looked outside lately and thought, Wow! This weather is Wild and Whacky! Well we did! So why not have a week long program to talk all about the good, the bad, and the ugly sides of weather! Plus, why not throw some hands-on projects in to keep it interesting? You'll leave YSI thunderstruck!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
December 7 - 11
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Nocturnals in the Night: $149

Have you ever been out at night, and heard something moving in the trees, or seen something streak across the sky in a blur? Join YSI in discovering the many possibilities of what you could have seen! From bats, to possums, to owls, our instructors will teach you about all the native nocturnal animals you can find, and even some that are non-native. You might even get to meet some nocturnal animals in person, too!

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
December 14 - 18
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The Science of Magic: $179

Would you like to know some of the secrets of magic tricks? YSI has you covered, or uncovered rather! We will dig down and search for the mysteries behind the magic, and also learn some tricks of our own so you can take your knowledge home to impress your family!

This is a 3 day program, due to the Christmas Holiday.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
December 21 - 23
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A Passion For Prehistorics: $179

Are you a fan of the old days? At YSI, we mean the OLD old days! Learn about dinosaurs, sabretooth tigers, and other prehistoric creatures, plus look at some awesome fossils! Make awesome crafts like an ice volcano, and you may even get the chance to test for fossils in a rock! We have a prehistoric passion, and so will you!

This is a 3 day program, due to the New Year's holiday week.

Location: Vasona Lake County Park (333 Blossom Hill Rd., Los Gatos, California 95032)

Click available dates below to register online now!
You will be redirected to complete your payment and registration.
December 28 - 30

Frequently Asked Questions

YSI Afternoon Science Programs will be from 1:00-5:00pm Monday through Friday. Each afternoon program will be a combination of 12 children going into grades 1-6.

Are there multi-session discounts?
10% OFF 3rd week plus all additional weeks. For Example: If you are registering your child for 4 (non-sequential) weeks, then the first 2 weeks will be full-priced science camps, and the following 2 weeks will be 10% off!

Are there multi-person discounts?
5% OFF all camp weeks for the 2nd child registered plus all additional children registered. For Example: If you are registering 4 children, the 1st child registered will have a full-priced science camp, & the following 3 registered will each have 5% off their science camps!

Is Financial Assistance offered?
Yes, there is. Click here to find the appropriate paperwork to submit.

Are there any YSI Summer Science Camp extensions available?
There are early-drop-off and extended-camp options to meet your scheduling needs! All of our summer camps for 1st grade and older have the option to add an Extended Day Camp that runs from 1:00pm - 5:30pm. The cost of this extended day is $139 per week.

For preschool and kindergarten aged science camps we offer an Extended Morning Camp that runs from 11:30am -1:00pm at $65 per week.

All camps also offer an Early Morning Drop-Off extension from 8:00am - 9:00am at $39 per week.

What ages can attend YSI Summer Science Camp?
YSI's Summer Science Camps are weekly, half-day camps that run from 9:00am-11:30am for our preschool and kindergarten camps, and from 9:00am-1:00pm for our campers entering 1st-6th grades. All preschool campers must have a birth date before January 1, 2020 and be able to use the restroom independently.

Where and when is YSI Summer Science Camp?
All YSI Summer Science Camps are located in beautiful Vasona Lake County Park with new sessions starting weekly from June 1st through August 14th.

Do you have an immunization policy?
Yes, we do. Click here to read our immunization policy.