Robert Myles, 39, of Little Rock, is accused of inappropriately touching a 14-year-old boy "by placing his hand inside the front of" the teen's pants, according to the incident report.
The report was filed on Monday and Myles was arrested on Tuesday morning. He was booked into the Pulaski County Jail with a $20,000 bond and was released a short time later.
Police say Myles had been sending text messages to the student before the incident. On Myles' arrest affidavit, police noted that a no contact order was requested.
Myles is charged with two counts of sexual assault.
He's expected to appear in court next week.