I have yet to see a class size that would permit a teacher to actually care about those students who require their attention and/or a teacher who was willing to spend the additional after hours necessary to ensure that students LEARN and can PASS the subject matter.
I have to BEG teachers to contact me and talk about my kids needs and post their progress online so that I can see that they are getting the required work done in a timely manner.
Too often, parents find out AFTER the fact that their kids are failing a subject and not turning in the required work. Yes there are parents who are not doing their part, but it starts with timely information FROM the school about their progress, class sizes that are consistent with a learning environment and teachers who actually want to teach and not just get a paycheck.
This nation has failed miserably in public education and then when parents demand the option to get their tax money back and ability to send their children to schools that may actually teach their kids they are met with obfuscation, roadblocks and politicians who declare that vouchers are NOT an option.
In my opinion, the school systems in the US are infested with the same UNION mentality that are destroying our manufacturing industries and having the same results.