Edited sentence: AP class final grades (not the collegeboard AP scores) have a weight of 1.06.As a consequence, it happens that some students obtain C for AP classes in school transcript even they score  excellent (5) in the collegeboard AP exams and vice versa.Because there are only limited seats for AP classes, students need to register early or they cannot take these classes...However, teachers grade classes not according to AP scores students earned from collegeboard exams -- the final grades are given before AP exam scores are available