Go to just about any school in West Allis, and you'll find kids who took swim lessons with Daniel Acker.

Their parents speak highly of him, a man now accused of sexually assaulting numerous students over several decades.

One parent said: "I sat in the swim lessons, watched him, he's a little quirky but loved swimming, loved teaching the kids."

No one here ever seemed to suspect that Acker might have a dark side.

"Oh my goodness, I wouldn't have even realized that he was like that," said one woman whose daughter took swim lessons with Acker.

One dad said: "There's nothing more that disturbs me more than the sexual abuse of children."

But so many people here trusted Acker, and aren't willing to give up on him yet : "You know, we don't know the whole story yet," said a mom. "Hopefully it's not true....I guess I don't know what to say. I don't know what to say."