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Adaptive placement
Fifteen questions to find where the gaps actually start
The placement test walks the prerequisite graph instead of marching through a grade. Get something right and everything beneath it is credited; miss it and everything built on top is set aside. That is why it can place a whole course in a few minutes, and why it opens on the easiest skill for a six-year-old rather than the middle of the year.
Teach, then practice
A worked example before the first question, every time
Lessons open by showing the method, not by testing whether you already know it. Miss a problem and it does not simply reveal the answer: it re-teaches the step you missed and hands you a fresh problem of the same type straight away, while the mistake is still in front of you.
Spaced review
Skills come back before they fail, not after
Every mastered skill carries a due date. When it comes up it returns to the queue by itself, spaced further out each time it holds. The dashboard shows what is due today rather than waiting for a test to reveal what has quietly gone.
Mistake notebook
Nothing you get wrong is thrown away
Missed questions are kept. You redo the original, then a few days later seal it by beating a fresh problem of the same type. A mistake you never see again is one you will make again in an exam, so this is the queue that clears itself only when the skill actually holds.
Exam practice
Full-length mocks at the real length and the real clock
AP, SAT, PSAT, ACT, state tests and competition papers, run at their actual section structure and time limit rather than as a shortened taster. Your account is offered the ones that match the course you are on, which is why the list below is shorter than the catalogue. Pacing is the part most students have never practiced, and a twenty-question quiz cannot teach it.
The knowledge graph
Every topic knows what it is built on
Topics are nodes joined by prerequisite edges, which is what lets the system reason about your knowledge rather than record your scores. You are shown the map: what is mastered, what is next, and which earlier skill is holding up the thing you are stuck on.
The parent view
What your child did, not a grade for it
Time on task, questions right and wrong, skills moving and skills stuck, and one concrete thing to say tonight. A weakness is never named on fewer than six answers, because two missed questions is noise and reporting it as a weakness would be inventing news.
Tutors and classrooms
Assign a goal, and the prerequisites come with it
A tutor picks the destination. The system expands it into the path underneath, in teaching order, starting from what the student can already do. The roster shows where each student is on that path without anyone having to ask.
Fifteen questions and you will know where you stand
The placement is free and takes a few minutes. It ends with your own course map: what is already solid, what is missing underneath, and the first lesson to work.
Or read how it works, the founding story, or the standards coverage.