Calendar for 2026–2027 Science Fairs and STEM Competitions Season: National Deadlines and How to Win

If your student is aiming for a future in science, engineering, or medicine, national research competitions are one of the most strategic ways to get noticed by top colleges.

This guide covers everything families need to know for the 2026–2027 STEM competition season, what science fairs are, how they work, which national competitions matter most, and the deadlines for top contests like ISEF and Regeneron STS. We’ve also added a full calendar of major state-level science fairs, since that’s where most students’ path to nationals actually begins.

All dates below are verified directly against each competition’s official website as of late July 2026. Where a competition hasn’t yet published its next-cycle dates, we’ve said so rather than guess, bookmark this page, as we’ll update it as official dates are announced.

What Are Science Fairs, and How Do Students Advance?

Science fairs are student-led research showcases where young scientists present original experiments or inventions. Projects are judged for creativity, scientific thinking, real-world application, and communication.

Competitions are typically structured in tiers:

Local or School-Level Fairs: Where most students start, usually held in the fall or winter and open to any project.

Regional and State Science Fairs: Winners from school-level fairs advance to affiliated regional or state fairs, judged more rigorously and often affiliated with national competitions like ISEF.

National STEM Competitions: The most prestigious U.S. science fairs, like Regeneron STS, Thermo Fisher JIC, and ISEF, either require direct application or a top placement at a qualifying regional fair.

Some competitions (like STS or the 3M Young Scientist Challenge) allow direct entry without a local fair. Others (like ISEF or Thermo Fisher JIC) require qualification through an affiliated fair.

Why Science Competitions Matter for College Admissions

Science fairs are far more than resume boosters. They build research, writing, and public speaking skills that matter well beyond high school.

High-performing students benefit from:

College application differentiation: Being an ISEF finalist or STS scholar signals elite academic ability and initiative.

Scholarships and awards: Top competitions offer six-figure college scholarships.

Research exposure: Students gain access to mentorship, labs, and professional scientists.

Leadership and independence: Completing a project from start to finish shows colleges a student can take initiative and solve real-world problems.

National STEM Competitions — Verified 2026–2027 Dates

Regeneron Science Talent Search (STS)

For: U.S. high school seniors with independent research
Application Period: June 1 – November 5, 2026 (8pm ET)
Top 300 Scholars Announced: January 7, 2027
Top 40 Finalists Announced: January 21, 2027
Finals Week: March 11–17, 2027, Washington, D.C.
Public Exhibition of Projects: March 14, 2027
Awards Ceremony: March 16, 2027
Entry Path: Direct online application, no regional fair required
Awards: $2,000 for each of the Top 300 Scholars; up to $250,000 for the top finalist
Venue: Washington, D.C.
Source:societyforscience.org/regeneron-sts

Known as the “Nobel Prize for high schoolers,” STS is the most prestigious U.S. science competition for seniors, and the application for this cycle is open now.

Regeneron International Science & Engineering Fair (ISEF)

For: High school students in grades 9–12
ISEF 2027 Finals: May 8–14, 2027, Los Angeles Convention Center, Los Angeles, CA
Entry Path: Must win at an affiliated regional or state fair (qualifying fairs run roughly September 2026 – April 2027)
Awards: Nearly $9 million in total scholarships and prizes
Source:societyforscience.org/isef
Venue: ISEF returns to Los Angeles for 2027

Thermo Fisher Scientific Junior Innovators Challenge (JIC)

For: U.S. middle schoolers (grades 6–8)
Current (2026) cycle: Application period closed June 10, 2026. Top 300 announced September 2, 2026; Top 30 finalists announced September 16, 2026; Finals Week is October 23–28, 2026 in Washington, D.C.
2027 cycle dates: Not yet published. Based on the current cycle’s pattern, expect the application window to open around February 2027, check the official page below before relying on this estimate.
Entry Path: Must be nominated by a Society-affiliated regional science fair (top 10% of middle school projects)
Awards: $25,000 ASCEND Prize, mentorships, and category awards
Venue: Washington, D.C.
Source: societyforscience.org/jic

Junior Science and Humanities Symposium (JSHS)

Status update: JSHS lost its federal funding and was suspended nationally starting in October 2025. Several states ran independent, state-only replacement symposia during the 2025–2026 school year without a national component. As of this writing, the official JSHS site states the program “has officially returned,” but the site is still being updated and full 2026–2027 regional and national dates have not yet been published.
Source:jshs.org

For families: if your student was planning around JSHS, check jshs.org directly before assuming your regional symposium is running on its old schedule, some states may still be operating a standalone state-level event instead of the national program.

3M Young Scientist Challenge (YSC)

For: Students in grades 5–8
Current (2026) cycle: Entry window closed April 30, 2026. Ten finalists compete at the final event at the 3M Innovation Center in St. Paul, MN, October 12–14, 2026.
2027 cycle dates: Not yet announced. Past cycles have opened entries in January, so watch for an opening announcement around that time.
Entry Path: Upload a 1–2 minute video describing your invention
Awards: $25,000 grand prize, $1,000 for finalists, summer mentorship with a 3M scientist
Venue: 3M Innovation Center in St. Paul, MN
Source:youngscientistlab.com

iFoRE (International Forum on Research Excellence), Sigma Xi Student Research Competition

For: High school, undergraduate, and graduate student researchers worldwide Abstract Submission Deadline: September 25, 2026
Conference Registration Deadline: October 30, 2026
Judging: October 24 – November 1, 2026
Format: Fully virtual (Zoom, Whova, ProjectBoard)
Entry Path: Submit an abstract, a short intro video, and a slideshow; conference registration also required
Venue: Virtual
Source:experienceifore.org/students

State Science Fairs Calendar 2026 — 2027 (What’s Confirmed So Far)

Since state and regional fairs are usually the qualifying step for ISEF and JIC, here’s where several major state fairs stand for the 2026–2027 season. Many haven’t published next-cycle dates yet, we’ve noted that clearly rather than guess.

A note for families:most state and regional fairs post their next-season dates in late summer or early fall. If your fair shows “not yet published” above, check back on the official site in the next month or two rather than relying on last year’s dates.

How to Prepare to Compete and Win

Success in science fairs doesn’t start with the experiment, it starts with a plan.

Whether you’re targeting STS, ISEF, or a state fair, here’s how students can build standout submissions:

Start Early & Build Skills: Engage in research or engineering projects as early as possible. Many STS finalists started projects in middle school or freshman year. Join research classes, science clubs, or summer programs. The key is a sustained project that can grow each year.

Align with Interests: Choose a question you’re passionate about. Look at past winners to see what topics have gone far. However, your unique approach matters more than the topic itself. Prepare clear abstracts and presentations, practice explaining your work to non-experts. (Competitions often award “communication” as part of judging.)

Network & Resources: Use online guides and mentor networks. For updated guides, how-to resources, and in-depth advice on competing in science fairs, explore our Learning Hub, where we cover everything from choosing a project idea to understanding national judging rubrics. The Society’s Pathways seriesand Science News have advice on doing research. Talk to previous contestants or teachers. For example, a student preparing for STS might seek feedback on their research report from science teachers or college researchers.

Make Application-Season Plans: Mark calendars months ahead. For STS, applications close November 5, 2026. For ISEF, know your regional fair’s qualifying window. For JIC and 3M YSC, watch for the next application cycle to open, since 2027 dates aren’t posted yet. Missing a deadline can mean waiting another year.

Maximize Achievements: On college apps, highlight not just that you competed, but what you did. E.g., “Advancing to the STS Top 300 (top 12% of 2,500 entrants) with my AI research” or “Selected as a Regeneron ISEF finalist (one of ~1,800 worldwide), presenting my solar energy project.” Use concrete numbers (we cite them here) to impress readers with the competition’s selectivity. The Society and Sigma Xi websites can provide such stats (our citations above provide examples).

Beyond the Top Prizes: Remember that making it to semifinals or nationals often comes with awards too. For instance, STS “Scholars” (Top 300) earn $2k, and all ISEF finalists get at least a modest cash award. These accomplishments also unlock alumni networks and scholarship opportunities (Society alumni often get invited to honor programs, and colleges sometimes offer scholarships to finalists).

Our team at Future Forward specializes in guiding middle and high school students to enter and prepare to win national STEM fairs and competitions.

Frequently Asked Questions

What is the deadline for Regeneron STS 2027? November 5, 2026, at 8 p.m. ET. The application period opened June 1, 2026.

When are ISEF 2027 finals? May 8–14, 2027, in Los Angeles, CA, a change from Phoenix, the 2026 host city.

Is JSHS still running for 2026–2027? JSHS was suspended nationally starting in October 2025 due to a loss of federal funding. The official site now says the program has returned, but full 2026–2027 dates haven’t been published yet. Check jshs.org directly, and check whether your state ran an independent replacement symposium during the suspension.

Can middle schoolers enter national science competitions? Yes. Thermo Fisher JIC and the 3M Young Scientist Challenge are both designed for students in grades 5–8 (JIC: grades 6–8).

Which competitions help most with college applications? Regeneron STS and ISEF are the most widely recognized by top colleges, especially for research-focused STEM programs.

Ready to Compete at the Highest Level?

The 2026–2027 science fair season is full of opportunity, for discovery, leadership, and competitive advantage in college admissions. But the key is starting now. By understanding deadlines, planning ahead, and getting the right guidance, students can turn curiosity into nationally recognized research.

Bookmark this page and check back as more state fair dates are confirmed.

Future Forward’s STEM Competitions Mentoring Program pairs students with experienced advisors who’ve helped past winners build standout projects and applications. We don’t just offer tips, we help students plan, research, and present at a level colleges notice.

Explore the program and get started early: futureforward.app/stem-compete