Short answer: the Diamond Challenge written concept is a 3–5 page PDF (double-spaced, 12-point font, 1-inch margins, in English, no cover page) that explains the problem your team is solving, who has it, your solution, why it beats the alternatives, how it makes or sustains money, why your team can deliver it, and what progress you have made. It goes in with a 60-second introductory video, and both are due by 5 PM US Eastern Time on 14 January 2027. The concept is judged on three questions: can it work, what impact will it make, and can this team succeed. Teams that start now have about ten weeks, which is enough if they talk to real customers before they write a word.
What is the Diamond Challenge written concept?
The Diamond Challenge is an international entrepreneurship competition for high school students, run by Horn Entrepreneurship at the University of Delaware. It has three rounds: a submission round, a pitching round and a final at the Limitless World Summit in Wilmington, Delaware. The written concept narrative is the heart of the first round. It is the document judges read to decide whether your team is invited to pitch.
It only matters in round one. Once a team advances, the written concept is replaced by a pitch deck and a live or recorded pitch. But nobody reaches those later rounds without a strong written concept, which is why it deserves more care than most teams give it.
Along with the narrative, every team uploads a 60-second introductory video. The two pieces are judged together, so they should tell the same story.
What are the exact rules for 2027?
These come from the official 2026–27 Diamond Challenge rules and the organiser's written concept guidance, checked on 31 October 2026.
Rule | What it means for your team
Length | 3–5 pages. Anything beyond page five is removed before judging.
Format | Double-spaced, 12-point font, 1-inch (2.54 cm) margins, saved as a PDF.
Cover page | Do not add one. Start on page one with your content.
Language | English only.
School names | Leave your school's name out unless the school is a critical part of the concept.
Video | A 60-second introductory video at a public link, showing team names, concept name, the problem, who it is for and the solution. Longer or private videos are disqualified.
Team | 2–4 students aged 14–18, plus one adult advisor aged 21 or over.
Revenue | The concept must not have earned more than $100,000 in total revenue before the deadline.
Deadline | 14 January 2027, 5 PM US Eastern Time.
Two of these rules catch teams out every year. The first is the page limit: the organiser does not trim a long document politely, it simply removes the extra pages, so your conclusion and your traction section can vanish. The second is the video link: if a judge cannot open it, the video does not count. Test it in a private browser window, logged out, before you submit.
What are the key Diamond Challenge dates for 2026–27?
Date | What happens
19 November 2026 | November Spark Session (8 PM US Eastern Time)
10 December 2026 | December Spark Session (8 PM US Eastern Time)
14 January 2027 | Written concept and video due, 5 PM US Eastern Time
22 January – 3 February 2027 | Submission round judging
10 February 2027 | Teams invited to the pitching round are notified
16 February – 7 March 2027 | Pitch events, plus virtual pitch judging
9 March 2027 | Virtual track finalists notified
29–30 April 2027 | Limitless World Summit, Wilmington, Delaware
The organiser says dates can change, so keep an eye on the official site. Our 2026–27 competition calendar tracks these deadlines alongside other competitions, and you can download it as a free printable PDF.
How is the written concept judged?
The Diamond Challenge publishes its judging criteria, and they are the best writing brief your teen will get. Judges score each concept out of 25 across nine statements, grouped under three questions. The wording differs slightly between the two tracks, but the shape is the same.
Can the concept work? Judges look for a team that understands the problem and the people who have it, a solution that offers unique value compared with what already exists, a financially viable business model (or, for social ventures, a financially sustainable impact model), and a promising plan for going to market.
What impact will it make if it does? For Business Innovation, this means an attractive market the team can win a real share of, a model that can scale quickly and efficiently, and a lasting competitive advantage. For Social Innovation, it means a problem that matters in how many people it affects and how badly, a model that scales cost-effectively, and benefits that last.
Can this team succeed? Judges look for qualities such as persistence, creativity, ingenuity, passion and storytelling, and for a team with the skills and resources to carry the plan out.
Notice what is missing from that list: polished design, long market reports and big promises. Nothing in the criteria rewards a team for sounding like a consultancy. Everything rewards a team for showing that it understands one real problem better than anyone else in the room.
What should a Diamond Challenge written concept include?
The organiser lists the topics the narrative must cover: the problem, the customers or beneficiaries, the product or service, its unique value against alternatives, the economics, the team's collective means, and evidence of progress or traction. There is no fixed template, so the order and headings are yours to choose. Here is the structure we suggest to the teams we coach, with a rough page budget for a five-page concept.
1. The problem (about half a page)
Open with the problem, not your product. Describe it through a real person who has it, then show how common it is. One specific, sourced figure beats three vague ones. If your evidence comes from interviews, say how many people you spoke to and what surprised you.
2. Who has the problem (about half a page)
Name your first customer or beneficiary group precisely. "Students" is too broad; "Year 10 students in city schools who commute more than an hour a day" is a group a judge can picture. Explain who pays, if that is a different person, such as a parent or a school.
3. Your solution and why it is different (about one page)
Explain what you will offer and how it works in plain language. Then be honest about the alternatives people use today, including doing nothing, and say clearly why yours is better for this group. Judges know the existing options; pretending there are none costs credibility.
4. How it makes money or sustains itself (about one page)
Show the basic numbers: what you charge, what it costs you to deliver, and roughly how many customers you need to cover your costs. For a social venture, explain who funds the impact and how the model keeps going without the founders paying for it. Simple, clearly reasoned numbers score better than a large forecast nobody can check.
5. Going to market (about half a page)
How will your first hundred customers find you? Name the channel, the first step and why it should work for this group. A partnership with one school, club or shop that has already agreed to try your idea is worth more than a plan to "go viral".
6. The team (about half a page)
Explain why your team is the right one. Link each person's skills, experience or connection to the problem directly to the work the venture needs. Keep it about the venture, not a list of school awards.
7. Progress and traction (about one page)
This is where strong concepts pull away. Show what you have done since you had the idea: interviews, a survey, a prototype, a pilot, pre-orders, a waiting list, feedback from an expert. Then say what you will do next and what you need. Judges respond to momentum.
A practical note on space: a double-spaced page in 12-point font holds roughly 250–300 words, so five pages is around 1,300–1,500 words. That is short. Every sentence has to earn its place, which is why the editing stage matters as much as the writing.
Business Innovation or Social Innovation: does the track change the writing?
Yes, a little. Teams choose a track when they first submit, and it cannot be changed afterwards. Business Innovation is for ventures whose main purpose is to solve a customer problem in a way that makes revenue and profit. Social Innovation is for ventures whose main purpose is to solve a social problem with a positive effect on people or the environment.
The structure above works for both. What shifts is the emphasis. A Business Innovation concept should be sharper on market size, pricing and competitive advantage. A Social Innovation concept should be sharper on how serious the problem is, how many people benefit, how the impact is measured, and how the model pays for itself over time. Social ventures still need numbers; "it will be funded by donations" is not a model.
If your teen's idea sits between the two, ask which outcome matters more to the team: profit that also does good, or impact that also needs income. That usually settles it.
What are the most common written concept mistakes?
Starting with the product. Teams fall in love with an app or a gadget and write about features. Judges want to know whether the problem is real first.
Borrowed market statistics. A global market figure pasted from a search result shows nothing about your customer. A local, sourced figure plus your own interview evidence shows a great deal.
No competition. Writing "there are no competitors" tells judges the team has not looked.
Breaking the format. Going over five pages, adding a cover page, using small fonts or tight spacing, or naming your school when it is not part of the concept. These are all avoidable.
A video that tells a different story. The 60-second video and the narrative are read together. Use the same concept name, the same problem and the same customer in both.
Writing it the night before. The narrative is short, but it compresses weeks of thinking. Teams who leave it late usually have nothing to put in the traction section.
How should a team plan the next ten weeks?
From the start of November to 14 January is about ten weeks, with exams and holidays in the middle. This plan leaves a buffer at the end.
Weeks 1–2 (early November): find the problem. Agree on the team and advisor, list three problems the team genuinely cares about, and talk to at least five people who have each one. Pick the problem with the strongest evidence, not the coolest idea.
Weeks 3–4 (mid to late November): shape the solution. Sketch the solution, map the alternatives, and test the idea with the same people. Attend the November Spark Session on 19 November with real questions. Choose your track.
Weeks 5–6 (early December): do the numbers and get traction. Work out pricing, costs and a simple break-even. Build the smallest possible test: a mock-up, a sign-up form, a short pilot. Join the December Spark Session on 10 December.
Weeks 7–8 (mid to late December): write. Draft all seven sections, aiming for six pages, then cut to five. Script and film the 60-second video.
Weeks 9–10 (early January): edit and submit. Ask someone outside the team to read it cold and tell you what they think the venture does. Fix anything they misread. Check the format, test the video link while logged out, and submit a few days before 14 January, not at 4:55 PM Eastern Time.
How can parents help without taking over?
Every team needs an adult advisor aged 21 or over, and many parents end up in that role or close to it. The most useful thing an adult can do is ask questions rather than supply answers: who did you speak to, what did they say, how do you know, what would change your mind? Introductions help too. A conversation with a shop owner, a doctor or a teacher who lives with the problem can transform a concept.
What does not help is writing or rewriting the narrative. Judges are looking for the team's thinking and the team's voice, and the rules require concepts to be created by the team members. A clear, honest document written by students is far stronger than a polished one that sounds like an adult.
The same applies to AI writing tools. The 2026–27 rules we reviewed do not say anything specific about AI, so check the latest rules and ask the organiser if your teen is unsure. Our advice is simple: use tools to check grammar or challenge your logic, but write in your own words. A concept built on real interviews reads like nobody else's, and that is exactly what judges remember.
Frequently asked questions
How long is the Diamond Challenge written concept?
Three to five pages, double-spaced, in 12-point font with 1-inch margins, saved as a PDF. Pages beyond the limit are removed, and cover pages are not accepted.
When is the Diamond Challenge 2027 deadline?
14 January 2027 at 5 PM US Eastern Time, for both the written concept and the 60-second introductory video.
Is there a template for the written concept?
No fixed template. The organiser lists what to cover (problem, customers, solution, unique value, economics, team and traction) and shares past example narratives in its participant toolkit. Remember that examples from previous years may not follow this year's rules.
Can a team change track after submitting?
No. The track (Business Innovation or Social Innovation) and the pitch format are chosen at the initial submission and are final once submitted.
Does my child need a working product?
No. Many concepts are at the idea or early-test stage. What judges want to see is evidence that the problem is real and that the team has made progress since having the idea.
Can my child enter alone?
No. Teams need two to four students aged 14–18 and an adult advisor. If your teen would rather work alone, the Blue Ocean Competition may suit them better.
Where to go from here
If your teen's team advances, the next challenge is the pitch. Our guide to what a winning Diamond Challenge pitch sounds like covers that stage, and our championship preparation guides cover every major competition we support.
Not sure whether your teen is ready, or which competition fits? Book a free 30-minute Readiness Assessment. We meet your child and you, then send a written plan within 24 hours. If the Diamond Challenge is not the right fit this year, we will tell you.
International Finance Academy is independent and is not affiliated with or endorsed by the University of Delaware, Horn Entrepreneurship or the Diamond Challenge. Rules, dates and judging criteria were checked on the official Diamond Challenge sites on 31 October 2026; always confirm them on the official site before submitting.
