Take a math placement
Answer a series of questions that adapt to you. It finds the exact point where math starts to get hard — and shows what you're ready for next. There's no time limit, and it's fine to get things wrong.
Are you a parent with a result code?
About your privacy
Plumb is meant to be used with a parent or guardian. We ask for no account, no email, and no personal details — a nickname is optional and can be anything. Only the answers to the questions are saved, tied to a random code, and results are automatically deleted after 30 days. This is a free diagnostic to show where a student's math stands — a starting point, not an official assessment.