:help:What is your view? Our school is considering going from 45-48 min core classes to 90 min blocks. Students would have two core classes on M/W and the other two on T/Th and 45-58 in all on F. Do you have 90 min blocks in MS? If you came from shorter periods, did you find more was accomplished in 90 min? I'm worried about how to suddenly change my lesson plans from 45 min classes to 90 min blocks. I'm sure it isn't a matter of combining two lessons.