It's not so much as 'passing' a test as it's a test to gauge which areas students are strong in, and which ones they'll need help in, and so forth. It helps us decide how to break up the classes, since everyone has a different level of ability, especially due to the varied worlds involved.
[She pauses for a moment, and tilts her head.] ... Were you interested in attending, Donatello?
[action]
[She pauses for a moment, and tilts her head.] ... Were you interested in attending, Donatello?