Nine major summer science research programs, three of which are genuinely free with everything covered. Two publish acceptance rates: RSI at under 2.5% and Simons at about 5%. Three commonly listed as free are not — Garcia costs $4,000, UT Austin's HSRA $4,000, and Beaver Works $3,000 above a $200,000 income threshold.
Most lists of summer science programmes are copied from other lists, which is how errors propagate. Three programmes routinely described as free charge four thousand dollars, and one described everywhere as a high school internship does not accept high school students.
This list was rebuilt from the programmes' own pages in September 2026. Where a programme does not publish something — a price, an acceptance rate, a 2027 date — that absence is recorded rather than filled in.
Which summer science research programs are genuinely free?
Six, with real differences in what "free" covers.
| Programme | Host | Cost | Length | Who can apply |
|---|---|---|---|---|
| RSI | CEE at MIT | Free, all expenses | 6 weeks | Juniors, 16+ by 1 July; US direct, international via partners |
| MIT PRIMES | MIT Mathematics | Free | Year-long | Sophomores and juniors, US residents |
| MITES Summer | MIT | Free except travel | 6 weeks | 11th grade, US citizen or permanent resident |
| MITES Semester | MIT | Free | 6 months online | 11th grade, US citizen or permanent resident |
| Stanford SIMR | Stanford Medicine | Free, $50 app fee (waivable) | 8 weeks | Juniors and seniors, 16+, US citizen/PR, must live with a guardian |
| Clark Scholars | Texas Tech | Free, plus $750 stipend | 7 weeks | 17+ by start, rising seniors and recent graduates, US citizen/PR |
| Welch Summer Scholar | Welch Foundation, 5–6 Texas campuses | Free, residential | 5 weeks | Texas sophomores and juniors only |
Two things stand out. Stanford SIMR provides no housing and requires students to live with a family member or guardian during the programme, which in practice restricts it to the Bay Area whatever the formal eligibility says. And Clark Scholars takes twelve students a year.
Which programs only look free?
Three, and they appear on free lists constantly.
Garcia Summer Program, Stony Brook. A $4,000 laboratory usage fee, a $50 non-refundable registration fee and a $66 student health services fee. Housing, if you need it, is $2,599 for the stay, with meals extra. No stipend. It is a strong programme — seven weeks, materials science, and it accepts international students, which is rare — but it is not free and never has been.
Summer High School Research Academy, UT Austin. $4,000 plus a $400 deposit. No housing, no transportation. Texas residents prioritised, and UT's own FAQ states that international and out-of-state applicants are not accepted, contradicting its own programme page.
MIT Beaver Works Summer Institute. Free for families with household income and assets under $200,000; $3,000 above that. No housing at either price — in-person students arrange their own accommodation with adult supervision.
None of these is a scandal. All three are described as free somewhere in the first page of search results.
What are the real acceptance rates?
Two programmes publish one. Eleven do not.
RSI states on its own FAQ that it "receives over 2,500 U.S. applications and 600 international applications each year and accepts less than 2.5% of applicants," for a cohort of 100. Stony Brook's Simons Summer Research Program states approximately 5%.
Everything else publishes cohort size at most. Clark Scholars takes twelve. Stanford SIMR takes "around 50." The Summer Science Program admitted "around 700 participants" in 2026 but publishes no applicant count, so no rate can be calculated. MIT PRIMES says only that "a small number of candidates is admitted."
If you encounter a percentage for any programme other than RSI or Simons, it was invented somewhere. This is worth knowing not because the missing numbers would change your plans — all of these are very hard to enter — but because it tells you how much of the surrounding commentary is manufactured.
Who gets excluded before they apply?
International students, mostly, and it is the constraint least well signposted.
MITES Summer and MITES Semester require US citizenship or a current green card. Stanford SIMR requires US citizenship or permanent residency and that you live and attend school in the US. Clark Scholars requires citizenship or permanent residency. The Simons programme requires it. MIT PRIMES is open only to US residents, and directs international students to CrowdMath instead. Beaver Works requires physically attending school and living in the US for the duration.
RSI admits international students, but through country-specific partner nominating bodies rather than direct application — so for most of the world the route runs through a national organisation, not the CEE website.
The genuine exceptions are the Summer Science Program, which welcomes international students and attending school outside the US, and Garcia, which accepts international students who can legally be present in the US.
What about NASA?
NASA does not run OSTEM internships for high school students. Its eligibility criteria require enrolment at an accredited college or university.
This error appears in a large fraction of summer programme roundups, and it costs students a deadline. NASA's internship deadlines for 2027 are real — 26 February 2027 for summer — but they are for college students.
What are the deadlines?
Mostly November to February, and as of September 2026 most programmes had not published 2027 dates.
The ones that had: MIT PRIMES closes 2 November 2026, with recommendation letters due 6 November and decisions by early January 2027. MIT Beaver Works runs 5 July to 1 August 2027, with online prerequisites opening 1 February 2027 and nominations closing 31 March. The Welch Summer Scholar application opens mid-December 2026.
For the rest, the 2026 pattern is the best guide: RSI closed 10 December, MITES 1 February, Clark Scholars 16 February, Stanford SIMR 21 February, UT Austin HSRA 22 March.
A warning about stale pages. In September 2026, ten of these sites were still advertising the closed 2026 cycle, and MIT's outreach application portal was still showing 2023 dates and referring to MOSTEC, which has since been renamed MITES Semester. Check the programme's main page rather than a portal, and check it again in December.
What if none of them take you?
Which is the likely outcome, and the part most lists skip.
These programmes collectively admit perhaps a few thousand students a year, against a US junior cohort in the millions. A plan that consists only of applying to them is a plan with a 97% chance of producing nothing.
The fallbacks, in order of value: a local university lab, which is free and difficult; an independent project, which is free and requires self-direction; and a paid mentorship programme, which costs $3,000 to $11,800 and buys structure rather than prestige.
Where a paid programme fits
The Oxford Centre for Advanced Research runs 1:1 online mentorships with PhD candidates and early-career researchers at Oxford, Cambridge, other leading UK universities and Ivy League institutions. The Oxford Scholar Programme is £2,000, about $2,600, for ten contact hours over ten to fourteen weeks. The Oxford Publication Fellowship is £3,400, roughly $4,400, and supports journal submission.
We accept approximately 60% of applicants, self-reported and unaudited like every comparable number here.
We would rather be plain about the comparison than imply one. RSI, PRIMES, MITES, SIMR and the Welch programme are better than what we sell, and they cost nothing. If you are eligible, apply to them, and apply on time. What a paid programme offers is availability: no citizenship requirement, no geography requirement, rolling admission, and a deadline imposed by someone who will read your drafts.
That is a real service. It is not the same thing as RSI, and nobody should tell you it is.
The three dates to write down now
2 November 2026 for MIT PRIMES. Mid-December 2026 for the Welch Summer Scholar application opening. And early December for RSI, which has closed on the Wednesday of the second full week in December for several years running.
Those are the ones that expire. Everything else can be arranged later.
Frequently asked questions
Which summer research programs are actually free?
RSI covers everything including housing and meals. MIT PRIMES is free and year-long. MITES Summer and MITES Semester are free apart from travel. Stanford SIMR is free with a waivable $50 application fee. Clark Scholars is free and pays a $750 stipend. The Welch Summer Scholar Program is free and residential but Texas-only.
Which ones are described as free but are not?
Three catch students out. Stony Brook's Garcia programme charges a $4,000 laboratory fee plus $50 registration and $66 health services, with optional housing at $2,599. UT Austin's High School Research Academy costs $4,000 plus a $400 deposit. MIT Beaver Works is free only under a $200,000 household income threshold and $3,000 above it.
Can international students apply?
To very few. MITES, Stanford SIMR, Clark Scholars, Simons and MIT PRIMES all require US citizenship or permanent residency. Beaver Works requires attending school and living in the US. RSI admits international students only through partner-country nominating bodies. The Summer Science Program and Garcia are the main programmes accepting international applicants directly.
What are the real acceptance rates?
Only two are published by the programmes themselves. RSI states it receives over 2,500 US and 600 international applications and accepts under 2.5%. The Simons Summer Research Program states about 5%. Every other percentage circulating for these programmes is blog-sourced and unverified.
Does NASA run high school internships?
Not through OSTEM, despite a great many blogs saying so. NASA's own eligibility criteria require enrolment at an accredited college or university. Applying as a high school student wastes a deadline. This is the most frequently repeated error in summer programme roundups.
When do applications open?
Mostly between November and February for the following summer. MIT PRIMES closes 2 November 2026 for the 2027 cycle. The Welch Summer Scholar application opens mid-December 2026. MITES closes 1 February. Most others had not published 2027 dates as of September 2026, and several pages were still advertising the closed 2026 cycle.