AlgoArena Team 3 min readGrade the Drawing While the Question Is Still Open
Whiteboard-style classroom quiz answers now get graded the moment a student submits instead of all at once at reveal, and review moved to a private screen only the host can see.
A whiteboard-style question in a live class round asks for something a multiple-choice question cannot: a real sketch, a diagram, actual handwriting. Every drawing in the room used to get graded one at a time, all at once, right when the teacher hit reveal, while 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, and no leaderboard position moves until reveal, so the room learns nothing it should not know yet.
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 page for a second screen, 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 grader compares each drawing against the reference answer, or against the question text when there is no reference, and gives a one-sentence reason for its verdict. The teacher sees that reason and can still overrule any grade with a simple mark correct or mark incorrect.
A mark the teacher makes on the review page while the question is open is held until the reveal like the automatic grade, and where the two disagree, the teacher's mark wins. The held grade belongs to the exact drawing it was made for, so a student who changes their drawing and submits again gets graded again. With automatic grading turned off, the review page still works, and the teacher's marks are the only ones applied at the reveal.
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.
The override matters as much as the automatic grading does. Grading earlier is only safe because a teacher in front of a live room can still check each call and change it.
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. With review on its own page, the main screen can stay on the question without either job interrupting the other.
Where it points
The same instinct is the direction for every live classroom answer type: grade as close to the moment of submission as the format allows, and keep a human able to see and overrule the reasoning.