Classes
A teacher sets assignments on the library's designs; students submit the projects they saved to the cloud, and the service reruns each submission itself to grade it.
Graded on the service's own run.
An assignment names a design and, if the teacher wants, targets on the figures its benches measure. A student submits a saved revision of that design; AiSIC reruns it with the site's engine and checks and judges the targets on that run, not on the numbers the student saw. The teacher reads every submission, can open the submitted revision, and writes feedback.
Open a class, or join one.
Any account can open a class and teach it; students join with the class's code. A student sees only their own submissions. The teacher sees the email address each student logged in with, and what they submit. Leaving a class or deleting the account removes that.