At least 20 seniors are being questioned about what happened.
School administrators have been meeting individually with students and their parents. They have suspended a number of those students, but they say they are treating each of the cases individually.
It is the second day of the school year for members of the Class of 2012 at Naperville North, but some of the students are already in trouble after administrators say they showed up drunk Wednesday morning.
The School District 203 spokesperson said she suspects about 20 students were involved. They are suspected of drinking alcohol Tuesday night or Wednesday morning in an off-campus setting.
The spokesperson also said that from conversations with students, it appears this began as an overnight party with alcohol involved, and a number of the students apparently showed up the next morning still under the influence.
"Every year, there's something," said a student when asked about whether this might be some kind of senior prank. "Last year, they threw a bunch of paper around throughout the school. I guess this year it was, like, getting drunk."
Robyn Block, director of Illinois Students Against Destructive Decisions (SADD), says statewide teenagers begin drinking at age 14 on average. She says incidents like this offer a good opportunity for constructive dialogue about drinking.
"It's a chance to start talking about prevention," said Block. "It's a chance to start talking about the health risks."
The district spokesperson says the school plans to do just that.