Eric Romig, 36, was arrested last fall on charges he had a sex with a 16-year-old girl.
Romig was arrested after the parents of that 16-year-old called police, saying the girl had been having sex with Romig, often at the home in Richland he shares with his wife and three children.
After his arrest, authorities said another four girls came forward to accuse Romig of approaching them for sex.
Some of the girls were students at the Faith Christian Academy in Sellersville at the time. Romig coached the girls' basketball team at the school between 2005 and 2010.
Romig will undergo a review to determine if he is a sexually violent predator.
Sentencing will not happen for at least 90 days.