When people talk about computer science competitions, the USACO is often one of the first names that comes up. It is one of the best-known computing contests in the United States, it is open to students around the world, and a strong result can strengthen a college application, especially for students interested in computer science. It is also practical to fit in: the season is short, results are released quickly, there is no team to assemble, and the rounds fall in the winter and early spring. The four-tier structure works a little like leveling up in a video game. Below is a clear guide to how the competition works.
USACO Competition Introduction
The USACO (USA Computing Olympiad) is an online informatics competition open to middle and high school students worldwide. Each year it serves as the selection process for the team that represents the United States at the International Olympiad in Informatics (IOI).
In US college admissions, the USACO is a well-regarded computer science activity, and solid results can help an application in that field. For context on how it is viewed, MIT Admissions’ blog lists the USACO as the US qualifying competition for the IOI.
USACO Competition Details
Participation Process
The USACO is an individual competition, so there are no teams to organize. You register yourself for a free account on the official website and take the contest online. Each round runs over a multi-day window, and you can choose when to start within that window. Once you begin, you have a continuous block of about four to five hours to work. A contest usually has three problems (occasionally four), and the maximum score is 1000 points, with each problem worth roughly 333 points.
There are four divisions, from lowest to highest: Bronze, Silver, Gold, and Platinum. A season is made up of the online contests plus the US Open. Everyone works up through the divisions in order, and each contest is a chance to earn promotion to the next one.
A few important changes take effect for the 2026 season:
- The US Open becomes an in-person, proctored contest. Top US students from the earlier online contests are invited to take part, and their results are the primary basis for selecting invitees to the 2026 USACO training camp. Some details are still being finalized.
- Gold and Platinum now use certified scores. To earn a certified score, you must start at the official synchronized time: 12:00 p.m. ET on the Saturday of the contest window, within a 15-minute window (12:00 to 12:15 p.m. ET). Certified scores are the ones used for official standing, including promotion and selection.
- Moving up from Gold to Platinum requires a certified score.
- To be considered for a US Open invitation, you generally need two to three certified scores during the season, ideally across all three online contests. Special circumstances are reviewed case by case.
- Platinum competitors from previous seasons were reset to the Gold division at the start of 2025 to 2026, a change USACO has said it may keep in future years.
Every new competitor starts in Bronze. If you score a perfect 1000, you are promoted on the spot and may start the next division’s contest right away within the same window, with a fresh timer. A very strong competitor can move up more than one division in a single contest weekend.
If you do not score a perfect 1000, promotion is decided after the contest window closes: if your score clears that contest’s promotion cutoff, you move up to the next division for future contests. Cutoffs vary from contest to contest. If you do not clear the cutoff, you simply continue at your current division in the next contest and try again.
Competition Schedule
The 2025 to 2026 season has three online contests, held in January and February, followed by the US Open in late March. You may take part in every contest in the season. The confirmed dates are as follows:
First online contest: January 9–12, 2026
Second online contest: January 30 – February 2, 2026
Third online contest: February 20–23, 2026
US Open: March 28, 2026 (in person, proctored)
Registration Method
Despite the name, you do not need to be a US citizen or resident to take part. The online contests and training materials are open to middle and high school students anywhere in the world. One thing to keep in mind: only pre-college students in the USA are eligible for finalist and training-camp selection and for the US teams at the IOI and EGOI. Everyone else is still welcome to compete in the online contests and use the training resources.
To sign up, create a free account on the official website. Registration is free, and there is never a fee to compete.
Official Website: http://www.usaco.org/
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