Channel3000:

Students at James Madison Memorial High School in Madison were let out early on Friday amid ongoing safety concerns, according to a Madison Metropolitan School District spokesman.
There was increased police presence at the school and officials postponed an early lunch on Friday, according to Ken Syke.
The students were released at 12:55 p.m. Officials said that buses will be there to pick up students.
They said that all of the schools extracurricular activities are scheduled, but there will be an extra police presence at each event.
Syke said that no incidents occurred at the school on Friday, but that officials are concerned about safety after a fight broke out at the school earlier this week. The fight apparently involving two groups of students on Thursday and seven students were ultimately arrested.

Sandy Cullen has more along with WKOW-TV and NBC-15. Madison School District statement.
Related: Gangs & School Violence Forum Audio & Video and police calls near Madison high schools 1996-2006.