1) Elementary schools are K-5, Middle schools are 6-8.
2) Elementary schools are local to the neighborhood and serve about 300-400 students.
3) A middle school consolidates 4-5 elementaries.
4) Because of the consolidation, the middle school tends to be farther away. A lot of kids are bussed to school. This can take up to 45 minutes for some kids.
5) Elementary begins at 9:00 a.m. Middle begins at 8:00am.
So, a 5th grader that was starting his day at 9am (and could walk to school) becomes a sixth grader that has to be ready for the bus at 7am, enduring a 40 minute ride with peers that can be significantly older than him.
Nobody believes this is an impact on attitude and performance? This age is hard enough as it is and we suddenly throw kids into a mix like this with a heavily modified sleep schedule on top of it.