COSMOS summer program is a California-based STEM activity course, held across 4 participating UC schools. Similar to college courses, the rigor is high. Likewise, you can expect to engage in lectures on niche STEM topics, field trips, group discussion, and group research projects.
A pricey investment, however, COSMOS isn’t the only way to deepen your STEM research experience. Read on for the full scoop…

How to Get into COSMOS
Gaining acceptance into the COSMOS Summer Program is competitive, but with strategic preparation and a focused approach, you can significantly improve your chances. Here are ten targeted tips to help you shine in your application and secure your place in this esteemed program:
1. Showcase Your Passion for STEM:
Actively participate in STEM-related clubs, competitions, or volunteer initiatives. Join your school’s robotics club or participate in community science fairs to showcase your practical experience. Engaging in summer internships at local research institutions or tech companies can also demonstrate your dedication to the field
Also, In your personal statement, vividly express your enthusiasm for STEM. Discuss specific projects you’ve undertaken, such as a robotics competition where you led a team to build a functioning robot, or a research paper you wrote on climate change impacts.
Clearly articulate how participating in COSMOS aligns with your aspirations to innovate in the field, such as pursuing a career in environmental engineering or biotechnology.
2. Seek Strong Recommendations:
Select STEM teachers for your recommendation letters. These teachers are familiar with your academic achievements in science and math, making them ideal endorsers. They can highlight your problem-solving skills, analytical thinking, and passion for STEM. A strong recommendation can set you apart by offering insight into your intellectual curiosity and persistence.
Additionally, ask for recommendations from mentors who have seen you excel in extracurricular STEM activities. These could include club advisors, competition coaches, or research supervisors.
Combining academic and extracurricular recommendations provides a well-rounded view of your STEM capabilities and character. Prioritize those who can speak to both your academic strengths and personal growth.
3. Highlight Relevant Achievements:
When detailing your accomplishments, focus on achievements that are closely tied to STEM. Awards, such as placing in regional or state science fairs, can demonstrate your commitment and skill. Additionally, specific projects like a renewable energy prototype or coding challenge victories can strengthen your application by showing applied knowledge.
Include academic achievements that showcase your intellectual rigor, particularly in advanced math and science courses. For example, listing your completion of AP Calculus or Physics not only shows academic excellence but also a deep engagement with challenging material. These accomplishments paint a picture of your readiness for COSMOS’ intensive learning environment.
4. Aim for a GPA of 3.5 or Higher:
COSMOS requires a minimum GPA of 3.0, but aiming for a 3.5 or higher significantly boosts your chances. Focus on maintaining high grades in math and science, as COSMOS heavily weighs these subjects in their admissions decisions. Your transcript should reflect not only good grades but also your ability to excel in challenging coursework.
Take honors or advanced placement courses whenever possible to further strengthen your academic profile. AP Chemistry or Honors Calculus are great options to showcase both your drive and ability to handle advanced STEM material. High achievement in these courses positions you as a strong candidate for COSMOS.
6. Prepare for the Application Process:
The COSMOS application process is detailed, and thorough preparation is key. Start by reviewing the requirements early and creating a checklist. Ensure that you gather all the necessary documents, such as transcripts and recommendation letters, well before the deadline. Being organized will help avoid last-minute stress.
Also, keep track of important deadlines by setting reminders. Missing a submission date could disqualify your application, so stay on top of every step. Staying organized and prepared shows COSMOS that you’re serious and capable of managing tasks efficiently, a quality they’ll appreciate in their students.
7. Network with Alumni:
Reaching out to past COSMOS participants can give you valuable insights into the application process. You can connect with them through social media, school alumni events, or even by asking your teachers for contacts. Learning from their experiences can help you avoid common pitfalls and strengthen your application.
In addition to practical advice, alumni may share insights into what life at COSMOS is like. They can give you a sense of what the program expects, which will allow you to tailor your application more effectively. Networking also shows your proactive approach, a trait that COSMOS admissions values.
8. Follow Up Thoughtfully:
After submitting your application, it’s essential to follow up with those who helped you along the way. Sending personalized thank-you notes to your recommenders and mentors is not only courteous but also professional. This gesture reinforces your appreciation for their efforts and leaves a positive impression.
In your thank-you note, briefly mention how their guidance or recommendation contributed to your application. This personal touch adds meaning and authenticity to your message. Following up with thoughtfulness can deepen your relationships with mentors, which may prove valuable in your future academic and professional endeavors.
What is the COSMOS Summer Program?
Established in 1998 by the California legislature, the California State Summer School for Mathematics and Science (COSMOS) gained popularity over time. COSMOS is a four-week California-based summer residential program for students interested in developing careers in STEM fields.
They aim to nurture the next generation of mathematicians, scientists, and engineers. The program also aims to connect high school students with a network of academics, industry leaders, and research facilities.
In fact, everyone from those who will be 9th graders through folks who will be in 12th graders are all welcome to apply. COSMOS primarily caters to students who live in the state of California, although they can admit up to 20 out-of-state students each year.
What’s more, admitted participants can expect to meet mentors like faculty, researchers, and scientists. So, you can expect to explore niche and advanced STEM topics that you haven’t explored in school before through project-based labs.
Additionally, participants pick up new techniques, technical process know-how, and learn about new emerging applications across different industries beyond the usual spread available at school.

What to Expect from a COSMOS Summer Program
The COSMOS curriculum covers a range of topics. For instance, you can learn about almost any STEM subject. You can expect:
- A variety of academic courses called clusters, across 4 University of California campuses.
- Clusters are distributed across UC Irvine, UC Davis, UC San Diego, and UC Santa Cruz
- Courses are taught by UC faculty and researchers.
- Students engage hands-on labs, field activity, lectures, and group discussion.
- Students work on research projects.
- Expect about 18-24 students per cluster.
- Clusters topics from quantum mechanics to skeletal growth and repair; plus, a plethora of specific STEM topics are available.
Cluster topics span engineering disciplines, biomedical sciences, computer science, ecology, marine science, materials science, mathematics, physics and astronomy, robotics, game theory… did I mention skeletal growth? See the full list of clusters by topic here.
Video: Summer With CSE: COSMOS
Who Gets into the COSMOS Summer Program?
Each of the 4 participating UC campuses can accommodate about 160-200 participants, so selection is competitive. In fact, a competitive COSMOS candidate has a GPA of 3.5 or above. In making admission decisions, COSMOS admissions officers consider the following factors:
- Good grades, particularly in math and science courses
- Math, science, STEM teacher recommendations
- A personal and thoughtful, humanized response to the personal essay question
In order to succeed, I recommend asking your STEM teachers to write your rec letters. Also, we recommend you submit the optional second rec letter. Essentially, go the extra mile!
Impact of COSMOS on College Admissions
Participating in the COSMOS Summer Program can significantly enhance your college application, especially if you’re aiming for top-tier universities with strong STEM programs. Admission officers look for students who demonstrate passion, commitment, and initiative—qualities that COSMOS helps nurture. Here’s how the COSMOS experience can give you an edge in the competitive world of college admissions:
Academic Rigor and Specialization:
- Advanced Learning: COSMOS provides a rigorous curriculum that mirrors college-level courses in STEM fields. Admission officers recognize that students who excel in COSMOS have already shown the ability to handle challenging material, which makes them attractive candidates for competitive STEM programs.
- Cluster Specialization: Through COSMOS, students dive deep into specialized topics such as quantum mechanics, robotics, and biomedical engineering. Demonstrating this level of specialization in a particular STEM field shows universities that you're serious about pursuing these subjects at a higher level.
Research Experience and Hands-On Learning:
- Real-World Research: Universities highly value applicants who have participated in research projects. COSMOS offers students the opportunity to engage in hands-on research under the guidance of university faculty. This experience can differentiate you from other applicants who may only have classroom-based learning on their resumes.
- Publications and Competitions: COSMOS students often continue their research after the program and sometimes co-author research papers or compete in national science competitions. These accomplishments can greatly bolster your college application, showcasing your ability to apply theoretical knowledge to real-world problems.
Networking and Recommendations:
- Connections with Faculty: Throughout the program, students work closely with university professors and researchers. Building these relationships can lead to strong recommendation letters from respected academics, which can be crucial for college applications, especially if you're applying to a research-based program.
- Peer Networking: COSMOS attracts some of the most talented STEM students in California. By collaborating with like-minded peers, you build a network that can support you throughout your academic career. Admissions officers value students who thrive in collaborative, innovative environments—something COSMOS embodies.
College Application Enhancement:
- Prestige and Selectivity: COSMOS is a highly selective program, admitting only a fraction of applicants each year. Listing this prestigious program on your application signals to admissions officers that you have been recognized for your academic potential in STEM. Additionally, COSMOS alumni often stand out during the admissions review process due to the program’s reputation.
- Personal Statement Material: The experiences you gain through COSMOS can provide rich material for your personal statement or college essays. Whether it’s a research project, a unique STEM topic you explored, or a mentor who inspired you, COSMOS can offer impactful stories that help you stand out to admissions committees.
What You’ll Need to Submit to Apply to COSMOS
- Fill out the online application
- Write your personal statement essay
- 1-2 STEM teacher recommendation letters
- Unofficial transcripts uploaded directly to the application prior to submission
- 8th and 9th graders: submit your 7th and 8th grade report cards
- Parent/guardian eSignatures
- A $30 application fee
Check the COSMOS application deadline each year for an updated date; it usually falls in February.
Applicants can expect to hear whether or not they were admitted to the COSMOS Program on by late March.
Associated Costs of COSMOS
- For In-state (California) students: $4,128
- For Out-of-state students: $6,500
- Out of state applicants are not eligible for financial aid.
Financial aid application is available for reduced tuition; but, for California students only. Supporting documents are due with the rest of your application – so, you can expect the same deadline.
To apply for financial aid, you’ll need to gather:
- Gross annual family income
- Total number of dependents
- A tax transcript from the IRS of copies of a 1040
Reduced tuition covers four weeks of dorm lodging, daily meals, and all materials. Additionally, admission is need-blind, meaning applying for financial aid won’t affect your chances of being selected.
“Prestige, if you please”
Free STEM summer programs offer really strong payoff in the college admissions process for STEM field college-bound applicants. Since COSMOS is not free, and carries a hefty price tag especially for out-of-state applicants who don’t qualify to apply for financial aid, the college admissions impact for just being admitted and participating is modest.
What You Do Next with Your Research Matters
Say for instance you continue to work with the grad students or professors you met through COSMOS throughout fall and winter to further develop the research you started over the summer.
Perhaps you get mentioned as a co-author or as a research assistant in a resulting publication in a peer-reviewed academic journal: that’s definitely more impactful than attending COSMOS in a vacuum.
Additionally, with that ongoing research, you could enter prestigious science competitions, building upon the foundational admission star power and deepening your STEM content knowledge along the way.
Therefore, be sure to swap contact info with professionals and peers you’d like to keep in touch with to start building your professional network. Also, send out thank you notes after the conclusion of the program to express your gratitude professionally.
Compete with This!
Original research that a student begins with a professor or grad students can be later used to enter amazing science competitions such as:
- Intel ISEF
- Google Science Fair
- Regeneron Science Talent Search
Whether you started your research with COSMOS or independently, you can take your findings to compete in science fairs and other math or science-based competitions.
Key Dates and Timeline
When planning to apply for COSMOS, staying on top of the application timeline is crucial. Missing a deadline could mean missing out on this unique STEM opportunity, so being organized and aware of key dates is essential.
Here’s an overview of the critical dates to keep in mind for the upcoming COSMOS cycle:
Important Dates:
- Application Opens: Early January (Typically January 10 at 8:00 AM)
- Application Deadline: Early February (Usually February 9 at 11:59 PM)
- Financial Aid Deadline: One day after the application deadline (around February 10)
- Admission Notifications: End of March (Typically March 28)
- Acceptance and Deposit Due: Early April (Usually April 10)
This timeline gives you ample time to gather the necessary documents and prepare your personal statement, but it’s important to start early. Since COSMOS is highly competitive, students are encouraged to draft and refine their application well before the February deadline.
Setting reminders for each of these dates can ensure you submit everything on time, and applying early can relieve stress in case there are last-minute technical issues.
Preparing for Financial Aid:
COSMOS allows time to prepare for financial aid if you’re a California resident. Ensuring that all components are submitted in time is essential for making your application as competitive as possible.
How COSMOS Differs from Other Programs
While there are many STEM-based summer programs available to high school students, COSMOS offers something truly distinct. What sets COSMOS apart isn’t just the intensive academic experience—it’s the combination of real-world research, collaboration with university faculty, and its exclusivity to California-based students. Here’s why COSMOS is different:
University-Backed Research:
Unlike other programs that may offer generalized STEM experiences, COSMOS students work directly with university faculty and researchers. The hands-on research, often conducted in state-of-the-art laboratories, goes beyond classroom learning. Students can explore niche topics such as quantum mechanics, robotics, or biomedical engineering.
Cluster-Based Learning:
COSMOS organizes its courses into clusters, which allow students to focus deeply on specific areas of interest. Whether it’s sustainable transportation or video game programming, each cluster is designed to offer in-depth knowledge and practical skills that are directly applicable to real-world STEM careers.
California Focused:
COSMOS is one of the few elite programs that caters specifically to California students, although a limited number of out-of-state applicants are accepted. This regional focus allows for a community feel, where students network with peers who may continue their education within the UC system or other California-based institutions.
These differences make COSMOS a unique and highly sought-after opportunity. Its hands-on, immersive environment provides an edge over more theory-based programs, helping students build not just knowledge, but a tangible skill set for the future.
Video: What I Learned from COSMOS
I Didn’t Get into COSMOS. What Do I Do Now?
If you don’t gain admission, you can try to simulate the experience. In other words, you can participate in similar programming on your own to parallel the COSMOS summer program benefits. Plus, you might get bonus points for independent initiative, resilience, and growth mindset!
In fact, independent research conducted with a college professor or grad students is incredibly valuable for STEM-bound applicants. Independent or group research that results in a published journal paper (where the student is mentioned as a co-author, or even credited as a research assistant) is a huge achievement. As COSMOS immerses students in research, you can create that opportunity for yourself!
Aim to pursue a research topic that will match up with the STEM field that you plan to pursue as a major. You may need to cold email several professors and/or lab directors at universities before you get a response that your research assistance is needed. As a result, we recommend you cast a wide net, and don’t be disheartened.
Create and use a virtual bulletin board to keep track of emails you’ve sent, and set deadlines within board cards for when you should follow up on the thread or escalate by calling the department and leaving a message with the department secretary.
Present at a Conference
You can bookmark the IEMS conference, which happens annually in March in Clearwater, Florida. This conference accepts high school students in the fields of Industry, Engineering, Management Systems, and related STEM fields. Not only that, IEMS hosts professors and scholars in Industrial Engineering, and branches out into related applied fields and industries. On the whole, the conference directors believe in preparing and empowering high school students to share their innovations and network with other academics. This leads them to add a unique high school and undergraduate student presenting track!
Track fields include, for example:
- Additive Manufacturing (3D Printing and more!),
- Automation and Modeling,
- Business Analytics,
- Computer Integrated Manufacturing,
- Corporate Governance,
- Data Analytics,
- Engineering Innovations,
- Healthcare Systems,
- Human Factors & Cognitive Engineering,
- Leadership & Diversity,
- Quality Planning & Process Improvement,
- Supply Chain Management, etc.
See a full list of tracks in the Call for Papers.
Your Pathway to COSMOS Awaits!
The COSMOS Summer Program is not just a prestigious opportunity; it’s a transformative journey that can ignite your passion for STEM and shape your future. By embracing the rigorous academic environment, engaging in hands-on research, and cultivating valuable connections with peers and mentors, you set the stage for success in both college admissions and your professional endeavors.
Remember, preparation is key—so take these insights to heart, showcase your unique talents, and approach the application process with confidence. Your pathway to an enriching summer filled with learning, innovation, and exploration starts now. Embrace the challenge, and let your aspirations soar!
You’ve got this! Summer, here we come. An Empowerly counselor can help you chart out a dynamic and rigorous summer. Click below to schedule a consultation by phone to learn more.
Video: Is Cosmos Only Helpful For UC Schools? (2024 College Admission Tips)
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Additional Resources
- For students interested in extracurricular opportunities, "40 Incredible Research Opportunities for High School Students" offers valuable insights into various programs that can enhance your application.
- It's also beneficial to explore "25 Science Internships for High School Students (2024)" to gain hands-on experience in the field before applying to COSMOS.
- Additionally, "Top 16 STEM Programs for High School Students This Summer (2024)" highlights other summer programs that align well with the COSMOS curriculum and can help strengthen your application profile.
