Ok so kids in my school are notorious for sharing answers to tests and we have midterms right now

Our hardest class is biology and everyone was studying like crazy. Someone in the first group to take the test (since we’re on a block schedule) leaked the open-ended questions to the rest of the grade so everyone knew it. After like 2 classes doing this the teacher caught on even though we had a sub and she was out sick and CHANGED THE QUESTION on the test. Keep in mind the normal multiple-choice questions were 1 point each and the open-ended ones were 15 each. She changed ONLY THAT ONE QUESTION and now everyone is losing their minds because my madlad teacher changed the test so she can catch all of the cheaters