Start your Application for the 2020 COSMOS:


  • Rising 8th graders (will be in 9th grade in Fall 2021) through rising 11th graders (will be in 12th grade in Fall 2021).
  • Students who are not residents of California may apply, but COSMOS can admit at most 20 out-of-state students each summer.
  • Please contact the Statewide COSMOS office with questions about student residency status for application purposes.


  • Completed online application, including one personal statement;
  • Two teacher recommendations (one required, second recommendation suggested) **STEM teachers preferred, others accepted
  • Official high school transcript(s) (9th graders must also submit a copy of their 8th grade report card)
  • Parent/guardian e-Signature(s) in the parent portal
  • Application fee ($30)--payable online with a credit card or check

Dates & Deadlines (2020)


  • Opening Day 2020: Sunday, July 5, 2020
  • Closing Day 2020: Saturday, August 1, 2020


  • Online Application Opens: January 6, 2020 at 8:00 PM (PST)
  • Online Application Closes: February 7, 2020 at 5:00 PM (PST) - continues unsupported until 11:59pm
  • Completed online application, parent/guardian signature(s), application fee ($30), financial aid application must be submitted electronically by February 7, 2020


  • Admissions Notifications for the COSMOS Program: March 27, 2020 at 5:00 PM (PDT):
  • Offer Acceptance or Decline (no response is considered decline) to COSMOS due April 10, 2020 by 5:00 PM (PDT)
  • If you ACCEPT your offer, a non-refundable $200 deposit must be paid by April 10, 2020 by 11:59 PM (PDT).  This deposit will go toward tuition and be deducted from the tuition balance. ** Note that this non-refundable $200 deposit is not covered by awarded financial aid. **


  • In case student is admitted from a wait-list later than April 10th, a one-week period will be given to take action on acceptance and payment of non-refundable deposit.

PAYMENT (times specific to credit card payments, checks must be postmarked by the date noted)

  • $30 Application fee due by February 7, 2020 at 5:00 PM (PST)
  • $200 Nonrefundable deposit due by April 10, 2020 at 5:00 PM (PDT)
  • Remaining tuition due by May 8, 2020
  • Credit card payments available. Please note that a 2.5% service fee will be added to ALL online payments.
  • For information on refund requests, see our Refund Policy.
  • See our Application and Payment Basics page for information on making payments.

*All refunds exclude the $200 non-refundable deposit*

  • Cancellation request received on or before May 18, 2020 by 5:00 PM (PDT): 100% of remaining tuition paid
  • Cancellation request received on or before May 22, 2020 by 5:00 PM (PDT): 50% of remaining tuition paid
  • Cancellation request received after 5:00 PM (PDT) on May 22, 2020: NO REFUND
  • Dismissal or voluntary departure from COSMOS program at any time: NO REFUND