C146 There Was a Slip in the Paper!(1)

This month's monthly test is really informal, and it's actually the students of the teachers of each class who oversee their own class. Furthermore, the invigilator field outside was especially small. What kind of result could be tested out? Wasn't it the same as how they took the test paper and turned it around to copy it! I really don't know what the principal is thinking!

At 7: 40 PM