Hopkins was employed by a K-through-5 after-school program at Sunquams Elementary School in Melville.
Authorities say Hopkins engaged in conversations with undercover officers in chat rooms claiming he met up with at least one teen for sex and often attempted to make contact with other minors. He also claimed to have "tons" of child pornography videos and pictures available to trade.
Prosecutors say Hopkins admitted to trading and viewing child pornography for approximately eight years.
Multiple images and videos were reportedly found on Hopkins' computer.
He faces 5 to 20 years in prison if convicted.
Hopkins was released on $300,000 bond, under home confinement.
Hopkins' mother reportedly runs a daycare operation out of the family home in Mineola, although there are no charges related to that. However, the judge ruled that the mother can no longer look after any young children.