Privacy

When you submit a Weekend 25 paper, we store the name, batch, school (if you enter one), and student ID / email you provide, along with your answers, score, how long you took, and the timestamp. Your IP address is also noted — this is only used to flag when two different student IDs submit from the same connection (e.g. a classroom or shared wifi), so we can tell it apart from actual duplicate attempts. It's never used to block anyone or shown publicly.

This information is used to grade your paper, keep the leaderboard and your personal streak/progress history accurate week to week, and to reach you if there's an issue with a submission. Your name, batch, and score appear on the public leaderboard once results are published for that week — your student ID, school, and IP address never do.

Data is stored in Cloudflare's key-value storage tied to this site. It isn't sold, shared with advertisers, or handed to any third party. Only the admin (ChemWithAbi) can access the full submission records.

Want your past submissions deleted, or have a question about any of this? Reach out and it'll be sorted directly.