that teacher has been barred from the campus penning the outcome of the investigation. what happened here is one of the young students in the class told a teacher's assistant what happened. the t.a. told the principal. the principal brought all the kids involved in and heard their sides of the story and this is what they found. >> as we understand, we believe oral sex occurred. it's not unheard of for children to engage in sexually exploratory behavior at a young age. but what's concerning is because it occurred in a classroom which is suppose to be a safe haven. >> reporter: the same morning the principal found out they sent a letter to parents.