Police say more than 30 students were involved in a large fight that resulted in the arrest of four teens at the Graham School in Hastings.

Hastings-on-Hudson police say they received a report of a large fight around 11:40 p.m. Wednesday inside the school for at-risk students.

Police say 30 teens were involved in the fight that broke out near Odell Cottage.

A 16-year-old boy and three girls, ages 15, 16 and 17, were each charged with misdemeanor counts of riot, obstructing governmental administration and resisting arrest.

Police say they made other arrests on campus in separate incidents, including Monday's arrest of a 15-year-old accused of stealing a car off campus.

On Tuesday, police say two students from Pleasantville Cottage School came to Graham and attempted to start a fight. On Wednesday, a campus resident was arrested on warrants.

That’s a total of eight arrests there in the past three days.

A Graham administrator says staff will be working to address this behavior to ensure a safe environment.