LONG BEACH, Calif. -- A teach accused of sexual assault has finally been arraigned.

The incidents happened in California near Long Beach. 4th grade teacher, Robert Pimentel, is accused of sexually assaulting 20 different kids and one adult. This has all been going on for 4 years and some folks are speaking out about some of the weird things he did in class.

"During lunch time, he would have songs playing for most of the girls in class...you just thought he was strange. Yeah, and he would hug most of my friends."

School administrators are also under fire in this investigation. They have been accused of letting this behavior go on. They were first notified four years ago and are accused of doing nothing about it.