9Wants to Know has learned all the people involved in this case are students at Ralston Valley High School.
9NEWS has chosen not to identify the 16-year-old suspect at this time.
The First Judicial District Attorney's Office believes there could be more victims and more charges to come.
9Wants to Know spoke with friends of the accusers - and the accused - who say there are lessons to be learned.
Sex is a sensitive topic for students, which is why everyone interviewed asked us to hide their identities.
"Kevin" knows the sophomore who is accused of crimes that could label him a sex offender.
There are three counts of unlawful sexual contact, indecent exposure, and third-degree assault on one of his alleged victims.
"He's one of the cooler guys. I don't think he's the kind of guy who would do this," Kevin said.
There are four young women involved. All are classmates of the accused teen.
"This is definitely not an everyday thing. And it's really surprising to hear about something like this," Kevin said.
Pam Russell, public information officer for the First Judicial District Attorney's Office, says the accused crimes happened off campus last year.
"This girl was drunk and she was having sex with this guy at a party," Kevin said.
Another classmate, "Tiffany," knows the suspect and at least one of the girls who pressed charges. She says some parents may be shocked to learn what their kids are doing when they hang out with friends.
"I think it's really scary. I think it's really common. At a lot of parties there's alcohol and people don't know how to control themselves so sometimes things get out of hand and stuff like that happens," Tiffany said.
Brenda, a mother who asked us to use only her first name, has two students who attend Ralston Valley High School.
"It really makes you think twice about letting your son or daughter go to any party. It's alarming and eye opening," Brenda said.
Brenda plans to have a serious conversation with her kids.
"Things happen that will ruin the rest of your life. One slip up can affect your whole future. And now here's this boy who may or may not be innocent. But even if he's innocent, he's going to have this hanging over his head from here on out," Brenda said.
The accused sophomore turns 17 next month.
Jefferson County School District spokesperson Lynn Setzer says the teen is still a student at Ralston Valley High School, but is taking lessons at home.
The suspect is forbidden from having contact with the victims or anyone under 18.
His first court date is May 30, the day before school lets out for the summer.
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