Our Kindergarten was full day - exact same length of day as first grade. Almost all the kids attended full day kindergarten. And still the behavioral problems.

I do think it has nothing to do with grade level! And EVERYTHING to do with the teacher.

I volunteered every week in first grade and often pulled kids to the library. A 5th grade class was always in the library during that time slot and that particular teacher was an absolute nightmare. She was constantly screaming and it was obvious the kids had no respect towards her. Truly, it seem like she hated her job.

There is a 2nd grade teacher at our school I've heard such wonderful reviews on that I would have considered a month trial with her at the beginning of the year if we could have met with her in advance. We didn't get her (after strongly suggesting it to this years teacher who helped group the classes). I actually take that as a hint from our teacher we should bail. She knew DS was not being served in the classroom. There is another 2nd grade teacher that has kids pulled from her class every year she's so bad. It's definitely all about the teacher!