The instructional schedule does affect student grades on the four AP Examinations in this study after they have been adjusted for group differences in student ability. The results from this study generally suggest that students, on average, obtain higher AP grades when instruction is given over an entire year rather than in a semesterized block…

What are the effects of block scheduling? Results of transitioning from traditional to block scheduling are mixed. Some studies indicate no change in achievement results, nor change in teachers' opinions about instructional strategies. Other studies show that block scheduling doesn't work well for Advanced Placement or Music courses, that "hard to…