ROCHELLE — Rochelle Township High School dismissed for the day after a serious medical emergency involving a student Thursday morning, a letter sent to parents by Superintendent Jason Harper said.

The medical emergency took place before the morning bell had rung. Paramedics and an ambulance were on site immediately, the letter said, and RTHS went into a hold protocol and required students to stay in classrooms and out of the hallways.

The decision was made to dismiss school for the day. Counselors were made available to students who wanted additional support due to the incident, even if students wanted to leave school and return to speak with a counselor later in the day.

All Thursday RTHS after-school activities were canceled and rescheduled. The Rochelle Elementary School District did not see any impact from the incident.