Signal and Silence
A medium Data Modeling mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Data Modeling
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
We run a digital classroom platform for K-12 schools where teachers post assignments and students submit them, sometimes past the due date. Leadership wants engagement insights that separate students who merely saw an assignment surface in their feed from those who actually opened and read it, and that stay accurate even as rosters change: students transfer or drop mid-semester, and the same course runs as different sections under different teachers each school year. Design a model that keeps these engagement rates correct for both a single teacher's roster and a district-wide dashboard.
Summary
They opened the assignment. Did they actually read it?
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your data modeling solution with real code execution
- Get instant feedback and a hire/no-hire decision