AlgoArena Team 4 min readGrade the Drawing While the Question Is Still Open
Whiteboard-style classroom quiz answers now get graded the moment a student submits, not all at once at reveal, and review moved to a private, host-only screen.
A whiteboard-style question in a live class round asks for something a multiple-choice question cannot: a real sketch, a diagram, actual handwriting. That richness used to come at a cost. Every drawing in the room got graded one at a time, all at once, right when the teacher hit reveal, and the whole class waited on it together.
What changed
Grading now happens the moment a student submits their drawing, quietly, while the question is still open and nobody else can see it yet. By the time the teacher reveals, the grades are already sitting there, ready. Nothing about a student's own screen changes early, no leaderboard position moves until reveal, so the room learns nothing it should not know yet.
Review moved as well. A teacher checking drawings as they arrive used to do it on the same screen the whole class was watching, a projector, which meant the room could see a classmate's answer and its grade before the reveal, undercutting the exact thing a live round is supposed to protect. That review now lives on a private, second-screen page instead, reachable from a phone or another tab, so a teacher can check work as it comes in without showing anyone else's answer to the room. The teacher can still overrule any automatic grade with a simple mark correct or mark incorrect, and can see the one-sentence reason behind a verdict before deciding whether to change it.
Why it matters
A live class round only works if grading is fast enough to disappear into the background of the activity. A teacher should not have to choose between rich answer formats, the kind that actually show how a student is thinking, and the momentum a live round depends on to keep the class engaged. And students should not learn something about the question, or about a classmate's answer, before the teacher means for them to. Both of those used to be in tension. They are not anymore.
The override matters as much as the automatic grading does. Automatic grading that a teacher cannot see the reasoning for, or cannot correct in the moment, is not something a teacher can rely on in front of a live room. Showing the reason and leaving the final call with the teacher is what makes moving grading earlier safe to do at all.
None of a student's own screen changes early either. A submitted drawing is graded quietly the instant it comes in, but nothing about the student's own view, their score, their place on the leaderboard, moves until the teacher actually reveals. The speed is entirely on the teacher's side of the room until the moment it is meant to become visible to everyone.
Moving the review panel off the shared screen turned out to matter for a reason beyond privacy, too. A teacher checking submissions while also running the room from the same projected screen was splitting attention between two jobs on one display. Giving that review its own private page, one a teacher can open on a phone while the main screen stays focused on the question, lets both jobs happen without either one interrupting the other.
Where it points
The same instinct, grade as close to the moment of submission as the format allows, and keep a human able to see and overrule the reasoning, is the direction for every live classroom answer type, not just drawings.