Compete

Business

Diamond Challenge

Diamond Challenge for High School Entrepreneurs

Pitch a business or social venture concept against teams from more than a hundred countries, for a prize pool above $100,000.

Run by Horn Entrepreneurship, University of Delaware

Official website How to prepare Reviews and tips

Key facts

Eligible grades
Not confirmed. Check the organiser's rules before entering.
The Diamond Challenge sets eligibility by age plus enrolment in an official high school or secondary education institution for the duration of the competition, not by grade.
Eligible ages
Ages 14 to 18 at the submission deadline.
Age is assessed at the submission deadline, not at registration.
Source, checked 2026-09-02
Individual or team
Team · Teams of 2 to 4 high school students. There is no solo entry. Students may team up with students from other high schools. Each student may participate on only one team and submit one concept per competition year.
Where it runs
Online and in person · International
Entry cost
FreeNo entry fee, and the Diamond Challenge provides free resources to students, educators and practitioners.
Registration deadline
Set locally, not published as a single national date 2027 dates were not confirmed on the official pages checked. For reference, the 2026 cycle opened 17 September 2025 and closed 15 January 2026, with finalists named in March and the summit in late April.
Competition dates
Portal opens September, written submissions due January, semifinal and final pitching rounds follow in spring at the Limitless World Summit.
Difficulty
CompetitiveSerious preparation over a season. Advancing past the first round separates prepared students from unprepared ones.
Prizes
More than $100,000 in total prizes across both tracksA prize pool described as over $100,000, distributed across both tracks plus topical awards for areas such as sustainability, technology and community impact. Reported tier amounts of $12,000, $8,000 and $4,500 for the top three were not confirmed on the official pages checked. Funds are intended to launch or grow the venture.

What Diamond Challenge is

The Diamond Challenge is a global entrepreneurship competition for high school students, run by Horn Entrepreneurship at the University of Delaware since 2012. Teams of two to four students develop an original business or social venture concept, submit a written pitch, and the strongest advance to live pitching rounds. It is free to enter, the curriculum and resources are provided at no cost, and there are two separate tracks so social ventures are not judged against for-profit ideas.

How the competition works

Two tracks chosen at submission: Business Innovation if the concept solves a customer problem, or Social Innovation if it addresses a societal or environmental problem. Teams also choose a pitch round format, either a live pitch event or a virtual pre-recorded pitch. Submission is a written concept plus a short video.

Eligibility notes

Open to students from any country. Teams need an adult adviser, who can be a teacher, parent or mentor. Teammates may come from different schools.

Is Diamond Challenge right for you?

Experience needed
None. Two tracks mean you can enter with an idea or with something you have already built.
Time commitment
A few weeks to a couple of months.
What you actually do
Submit a written concept and, if you advance, pitch it live to judges.

A good fit if

  • You have a venture idea and want structured feedback
  • You want a free entrepreneurship competition
  • You can talk about your idea convincingly

Probably not for you if

  • Students who want a technical build competition

Compare this against competitions matched to you

Common mistakes

  • Describing a product instead of a problem and a customer.
  • Ignoring the written round's required sections.
  • Pitching without having spoken to a single potential user.

How to register

  1. Form a team of two to four students aged 14 to 18. Teammates can be from different schools or different countries.
  2. Find an adult adviser. Any teacher, parent or mentor willing to sponsor the team qualifies.
  3. Register on the Diamond Challenge site when the portal opens in September.
  4. Choose your track: Business Innovation for for-profit concepts, Social Innovation for social ventures. Read both descriptions carefully, as the judging criteria differ.
  5. Submit the written concept before the January deadline. Attend the free pre-submission support events beforehand.

Register on the official site

What skills you need

  • Problem framing
  • Customer research
  • Business model design
  • Financial estimation
  • Written pitching
  • Live presentation

How to prepare

Judges at this level see hundreds of plausible ideas. What separates the advancing teams is evidence: having actually spoken to people with the problem, and being able to say what you learned that changed your plan. A modest idea with twenty customer interviews behind it beats an ambitious one built entirely from assumptions.

What to study

Problem definition
Name a specific problem experienced by a specific group of people. Judges discount broad problems stated in the abstract almost immediately.
Customer discovery
Talk to people who have the problem, before you design the solution. Record what surprised you. This is the section most entries are thinnest on.
Business model
How money moves: who pays, how much, how often, and what it costs you to deliver. For the social track, how impact is sustained rather than how profit is made.
Evidence of traction
Anything real: a prototype, a waiting list, a pilot, a signed letter of interest. Small real evidence beats large projections.
The pitch
Written first, then live. In both, the first thirty seconds should make the judge understand the problem without any jargon.

Full preparation guide, including a week-by-week plan

Recommended resources

Past problems and materials

Only materials the organiser or an authorised archive publishes openly are listed here.

  • Past finalist pitches

    Winning concepts and pitch recordings from previous years are published on the official site.

Frequently asked questions

Does the Diamond Challenge cost anything?

No. It is free to enter, and the curriculum, resources and pre-submission support events are provided at no cost by Horn Entrepreneurship.

Can students from outside the United States enter?

Yes. It is a global competition with alumni from more than a hundred countries. Teams from any country may enter.

Do I need a working product?

No. It is a concept competition, so a well-evidenced idea with a prototype or pilot is enough. Evidence that you tested the idea with real people matters more than the sophistication of the product.

Can I compete alone?

No. Teams must have between two and four students, plus one adult adviser.

Reviews, tips and resources from other students

Posts are public. Do not share your full name, school, address or contact details.

Your rating
0 / 1200
Sort

Something out of date?

If a deadline, fee or eligibility rule on this page no longer matches the official site, flag it and it goes into the review queue.

You might also look at

StructureDivisions by grade or level
  • FormatTeam
  • WhereOnline
    • Check site
    Business DECA Hundreds of role-play and written business events, competed through a school chapter up to an international conference.
    Check site