This posting is directed toward high school teachers. Many schools have or are in the precess of changing the teaching day from 7-8 periods to 4 blocks of time. My question is for anyone with experience in both systems of scheduling. Can the students process as much material in a semester in block as could be processed in the typical yearly schedule? Any other revalent comments, ideas, and suggestions would be greatly appreciated. I am in favor of the change ASAP to allow me more time to develope projects with the students but not all of the members of the department are as excited about changing. Thank you for anything that you can volunteer.