Students at one suburban high school might have to hold it or risk staying after school.
A policy at Evergreen Park High School gives students three restroom visits during class per semester. After that, they have to make up any missed class time after school.
One student said the unusual policy caused a problem for one of his classmates.
"She had to go to the bathroom twice, and then the teacher gave her a real big deal about it. And it was something that was blown out of proportion and she got escorted by the security," said student Sam Bailey.
But Principal Bill Sanderson said the policy is designed to make sure students don't miss valuable class time. He said it deters them from using restroom visits as an excuse to miss class.
Each teacher gets to decide whether to enforce the policy in their classes, but some students argue that they don't have time to stop at the restroom otherwise because they only get five minutes between classes.
"This principal -- let him find out he's got diarrhea, and he's only told that he can go to the bathroom three times a semester and we'll see how this policy holds up with him," said parent Bea Bailey.