A group of parents is suing a California preschool as it prepares to shut down following allegations that at least two boys got oral sex from a 5-year-old girl.

One of the parents, Richard McCarthy, told KABC-TV on Friday that his 4-year-old son and another student “have been introduced to this feeling that they don’t know how to process, [and] are still looking for it, and trying to make it happen” following the incidents at the First Lutheran Church of Carson School in Carson, California.