For US public charter schools and networks.
Four students scored 62 on the same interim. Nothing in that report tells a teacher what to do on Tuesday.
A voice tutor in English and a concept-level view for every teacher: before first period, which students are stuck on which concept and which concept to reteach first. Your teachers choose the topics, the order and the pacing; PrepGraph builds the diagnostic sequence around that from its own library. Pilots are quoted per cohort, in writing.
Constructed to show the shape of the output. Four students in one ninth-grade class group score 62 on the same fall benchmark. PrepGraph never sees that test and never scores it — the 62 is yours. What PrepGraph has is each student's own work inside PrepGraph on the same concepts, recomputed overnight. All four are entered as approaching; when the intervention block is scheduled, all four are sent to the same group and handed the same worksheet.
In her PrepGraph practice she picks the same pre-tagged wrong answer on sign-distribution items: a minus sign in front of a parenthesis gets distributed to the first term and not to the rest. That comes from which specific distractor she chose in our items, not from any score.
What it would takeTen minutes on one habit, this week, before it becomes the method she trusts. She reads struggling on that one concept and understand on the rest, so she sits at the top of the reteach queue there and nowhere else.
In his PrepGraph work the arithmetic is clean and the setup is not: he reads understand on the computation concepts and struggling on translating a written situation into an equation.
What it would takeSomething other than more math practice. The reteach queue puts him in a different place from Student A, and the thing that stopped him will stop him again in science.
Every concept PrepGraph has evidence for reads understand. She read each question twice in a language she does not speak at home and answered the last two in fragments because the clock ran out — a reading-under-time story that lives in your assessment, not in her concept work.
What it would takeNothing from the reteach queue. The grid leaves her out of the reteach group, and her teacher's judgement takes it from there.
He has not used PrepGraph. His row is blank — unmeasured, not zero, and never green by default.
What it would takeUsage. A student who has not practised inside PrepGraph has no row to read, which is why the pilot puts twenty minutes of practice into every week.
One number, four students, four different actions. Two of them do not need more math, one of them needs no reteach at all, and the intervention block hands all four the same worksheet because nothing in the report separates them — so nothing in the schedule does either.
Four people have to agree
What this is, from where you sit
The same product, read from four chairs: what it puts in front of you, and what you would look at on the first call.
Executive Director / CEO
A pilot on one grade, quoted in writing, with a result you own.
A founder-led pilot on one grade: scope, seats and price in writing before it starts; your clearance recorded for each student before any account exists; activation and usage reported to you every week; and a written review at the end that you approve before it is shared — the dataset, the wording, and whether your school is named. The school buys a seat for every student in the cohort, so every child in the class has the same tutor.
What you would look atThe pilot agreement: the grade and subject, the cohort and its seat count, the price, the person on our side who runs it, the reply channel and response terms, and the review you approve before it is shared.
Chief Academic Officer
Concept-level diagnosis, from work students do inside PrepGraph.
Every night PrepGraph places each activated student into one of three bands on every concept it has evidence for, ranks that class's concepts by which to reteach first, and names the students behind each one. The concept names and the teaching units come from PrepGraph's own library, written for Indian school and entrance-exam curricula; your teachers choose the topics, the order and the pacing, and the diagnostic sequence is built around that. A misconception is read from the specific pre-tagged wrong answer a student chose, not from a score.
What you would look atOne class on screen, its concepts ranked by the reteach rule, counts of how many understand, are developing or are struggling under each, the names behind the struggling group, and the date the rollup was computed. A saved student set you reopen two weeks later to see, student by student, where each sits now on that concept.
Principal
A signal, a prefilled screen, and no second system to maintain.
From a flagged concept or student, PrepGraph takes the teacher to the assignment, the class or the student with the fields already filled. It deep-links and leaves the record-keeping where it already lives, so there is no second intervention log to maintain. Each morning the flagged students arrive with their reason attached: a misconception where the strategies already tried have not worked, five or more days without recorded activity, or an accuracy regression on a concept.
What you would look atThe morning register: flagged students from every class in the school in one table, worst first, each with its reason, and the concept a grade team should reteach this week.
Teacher
Before first period: who is stuck, on what, and what to reteach first.
PrepGraph does not replace you. It reads a misconception from the specific wrong answer a student picked — a distractor tagged in advance — and the voice tutor keeps working that concept with a student, in English, when you cannot get to them one to one. You choose the topics, the order and the pacing; the tutor and the practice follow your sequence.
What you would look atYou save the students behind one concept as a named set, and the set records the band each was on the moment you cut it. Two weeks later you reopen it and see, student by student, where each sits now on that concept.
The five questions
Where your students' data goes, and the controls we operate
The controls PrepGraph operates on a school's student data, stated as facts and terms, and the five questions the US Department of Education tells a school to ask any technology provider, answered in order. Each control goes into the agreement with your school in the same words.
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1. What learning problem does it solve?
The Monday-morning one. A teacher can see, before first period, which students are stuck on which concept and which concept to reteach first, from the work each student did inside PrepGraph. Overnight, each activated student is placed in one of three bands on every concept there is evidence for; the class's concepts are ranked by which to reteach first; and the students behind each are named. A leader gets chapter-level mastery for every class in the school in one table and a single at-risk register, worst first. A misconception is read from the specific pre-tagged wrong answer a student chose, not from a raw score.
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2. When should it be used?
After a unit is taught, as weekly triage, by the teacher who already teaches those students. The band is a three-level cut on an ability estimate and it feeds the reteach queue; decisions about eligibility, tiers and services stay with the instruments and the people your school already uses for them.
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3. For whom?
High school to begin with: grades 9–12, math and science, in English, with your teachers choosing the topics, the order and the pacing. Our US assessment items cover the ACT and SAT, with a concept map covering 39 AP course outlines. We are not affiliated with, endorsed by or licensed by ACT, Inc. or the College Board; we name their exams to say what our content covers.1
- 1 content bank, 20 September 2026
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4. For how long?
A semester if your calendar allows, with the measurement set up before the first login and a mid-point look at activation and weekly practice together. A concept shows a band as soon as there is graded evidence for it, so a fresh grid is thin and fills in as students practise; the response count behind any cell is available on request.
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5. What evidence shows it works?
The pilot is built to produce yours. Four measures are recorded on the cohort — activation, weekly practice, completion of each assessment window, and score change on an instrument your school sets and scores, matched student by student — against targets agreed in writing before day one. The written review at the end states each one as met or not met, with the number of matched pairs and the exclusions printed, and you approve the dataset, the wording and whether your school is named before it is shared.
The pilot
A founder-led pilot on one grade
A pilot with PrepGraph is an instrument, not a free trial: one grade, a cohort with a seat for every student, a fixed window, four measures, and a written review at the end that you approve before it is shared.
What is measured
- Activation — how many students on the roster reached a first login.
- Usage — days per student with practice attempted, and weekly active students.
- Completion — what share of the cohort finished each assessment window.
- Score change — baseline against final on an instrument your school sets and scores, matched student by student, reported as the number of matched pairs, the mean change, the median change, and how many students scored higher the second time.
Next step
A 30-minute call about the grade, the subject, the assessment you already trust and the dates that suit your year. A person replies within one working day.