A former Sioux Center teacher has pleaded guilty to having sexual contact with at least six young boys.
37-year-old Curtis Van Dam pleaded guilty Friday to one count of second-degree sexual abuse, five counts of third-degree sexual abuse and one count of sexual exploitation by a school employee.
Van Dam faces up to 80 years in prison.
He was sentenced in another case in September to 15 years in prison after he pleaded guilty to sexual exploitation of a child.
Until being fired, Van Dam taught at Sioux Center Christian School.
He was implicated in dozens of incidents involving boys younger than 13.