The fight broke out around 1:14 p.m. at Hinsdale Central High School, 5500 S. Grant St., and involved a 16-year-old boy and a 16-year-old girl.
Both were issued a local ordinance citation.
Police also responded to Hinsdale Central earlier this month for a report of a 17-year-old Willowbrook boy who was truant, according to Hinsdale police.
School officials told police the boy was absent from school on March 5 without the proper permission, according to the police report. The teen was issued a citation.