Kodomo no jikan 01 raw
Daisuke Aoki is a new teacher at Futatsubashi Elementary School. But his class is rebellious, and the leader of the pack is a precocious young girl named Rin Kokonoe with a dark past, and who plays on his weaknesses.

School life comedy. Based on a manga for adults.

lol, heavily censored, even for stupid things. ^^; It looks like the TV networks want to play it down as safe as possible.
Anyway, I have mixed feelings about this one. The difficulties a male teacher has when he tries to teach a class of unruly preteens coming into adolescence is an interesting (and thorny) subject, but I'm not sure I want to sit through it.