Testbook.
Assessment at cohort scale is an infrastructure problem, not a quiz feature.
- Client
- Testbook
- Sector
- Edtech
- Scope
- App + web
- Stack
- React, Node.js, React Native
A test preparation platform on app and web, covering question banks, timed assessment, marking and analytics.
What made it hard.
Most learners stop early. Structure, pacing and reminders move the number more than features do.
Live at scale
A session with thousands of concurrent learners is an infrastructure problem, not a video problem.
Assessment integrity
Marking has to be fast, consistent and hard to game across large cohorts.
Many stakeholders
Students, teachers, parents and administrators each need a different view of the same data.
What we shipped.
A test preparation platform on app and web, covering question banks, timed assessment, marking and analytics.
How it holds up.
The funnel from enrolment to completion is instrumented first, then designed against the drop-off points the data actually shows.
The systemAssessment delivery is isolated from content browsing so an exam window cannot be affected by general traffic.
Theirs, from day one.
Repositories, cloud accounts and documentation sat with the client throughout. Senior engineers wrote the production code rather than specifying it.
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