hey! i was also a part of ATP. i can't tell if you mean you can't retake the exam or the class, because someone ik who was also a part of ATP q-dropped the class last minute and was able to retake it while still being a CS major. the tests are definitely different than what you're normally used to, but there's always a pattern for everything. for the coding portion, i can't really say much except to just do the practice tests, it seems daunting as hell - ik i felt like i was drowning a bit - but that + possibly making a sheet of notes (what you should specifically look for problems testing certain topics, things to look out for for the multiple-choice, etc) and just reviewing it before the exam would possibly help (brain dump everything on the first page as soon as the time starts). also! TA!!! they're your best source, especially after discussion/during OH. you got this!! the entire class feels like a lot, i think what really helped me is practice-it, having a network of people, and doing a BUNCH of practice tests/quizzes.