If you take an examination as a senior, colleges will not receive your grade before July - probably well after you have been admitted. If you choose to report AP grades obtained before your senior year, you will primarily be telling the colleges that you took a difficult course and that you are serious about your studies. Overall, approximately two-thirds of all AP test takers receive AP grades of at least 3. This grade is regarded as an indicator of an ability to do successful work at most colleges.