Apr  9
Admissions Notifications
Apr  16
Offer Acceptance or Decline
Jun  27
COSMOS 2021 Program Kick Off!
Jul  6
COSMOS 2021 Academics Begin


The California State Summer School for Mathematics and Science (COSMOS) is a 4-week summer program for high school scholars with demonstrated interest and achievement in math and science. The program is typically residential, though summer 2021 will be remote. 

COSMOS provides students with an unparalleled opportunity to work side-by-side with outstanding researchers and UC Santa Cruz faculty, covering topics that extend beyond the typical high school curriculum. 

Summer 2022 applications and cluster information will be available in January 2022.

2021 Program 

We are excited to host COSMOS remotely this summer!  Due to the pandemic, we will gather and learn virtually. 

In addition to the academic component, we will also include a community component aimed at helping students connect outside of the formal classroom environment. 

*We are no longer accepting applications for the summer 2021. 


We're still hiring!  If you are a credentialed STEM educator looking to work with us this summer, please check out the COSMOS Teacher Fellow job posting and reach out with any questions.

COSMOS Statewide

Four University of California Campuses currently offer a COSMOS summer program to current 8th-12th grade students. Click the corresponding links below to visit the other COSMOS program websites.

Eligible students must physically reside in the US for the duration of the program. Students must also be able to receive packages at their US residence prior to the start of the program. These are requirements for all students regardless of their CA residency status for in-state tuition. 

Apply to any campus using this application link.


COSMOS at UCSC is housed within the Educational Partnership Center (EPC) under the Division of Undergraduate Education. 

The EPC reaffirms it's commitment to diversity, equity and inclusion and denounces the recent attacks against Asian Americans throughout our country.  Read more here.


Student volunteers edit, publish and contribute to an online newsletter highlighting their experiences at COSMOS.  This will continue in 2021!  Check out the 2019 Newsletter, Macrocosm, for inspiration.