Erudia turns practice into a standing. The math leaderboard ranks every player by the XP they earn solving problems — globally, by country, and in leagues you climb from Bronze to Diamond. Compete in math against the world, or anyone willing to take you 1v1.
Free to compete · public rank badges · every subject counts
There isn't one math league here — there are five boards, each rewarding a different kind of strength. Show up daily and your XP climbs the global and country rankings. Want a head-to-head fight instead? The 1v1 Elo board settles it. Pick the board that suits you, or chase all five.
Global ranks everyone by lifetime XP. Country filters that same race to your nation, so you can be the best in yours. Leagues sort you into a tier of similar players and promote you when you finish near the top. Speed is a time-attack board for players who answer fast and clean. 1v1 is ranked dueling on an Elo rating — every subject Erudia teaches can show up in a match. New to the platform? Start with learning math or browse every subject first, then come back and compete.
Finishing high doesn't just move a number — it earns a badge that sits on your profile for everyone to see. They're awarded across all five boards, so a strong week in any one of the math rankings can mark your name.
Champion is reserved for whoever sits at #1. Below it, Top 3, Top 10, and Top 100 reward the chase — proof you held your ground against the field. Badges are visible to every player, so the global math leaderboard isn't anonymous: it's a record of who actually showed up and won.
Every lesson, review, and duel you complete earns XP, and that XP ranks you. The global math leaderboard sorts every player by total XP; the country board filters to your nation; leagues group you with players near your level. Speed and 1v1 boards track their own scores. Climb by doing more math, more accurately.
Leagues are tiered divisions you climb by earning XP: Bronze, Silver, Gold, Platinum, and Diamond. You compete against a cohort of similar players, and finishing near the top promotes you to the next tier. It turns the global math rankings into a ladder you can actually move up, week over week.
Ranked duels use a standard Elo system. Beating a higher-rated opponent gains you more points than beating a lower-rated one, and losses cost more against weaker players. Your rating settles around your true skill over a handful of matches, and the 1v1 board ranks everyone by that number.
Top placements earn public badges that show on your profile for everyone to see: Champion for #1, plus Top 3, Top 10, and Top 100. They apply across the global, country, league, speed, and 1v1 boards, so there is more than one way to earn one.
Yes. Every leaderboard, every league, ranked 1v1 duels, and every rank badge are free. Make an account, start earning XP, and you are on the global math leaderboard the same day.