ST. PAUL — Police said a 16-year-old student attacked a science teacher and the student’s 15-year-old brother punched the assistant principal during a fight in the lunchroom at a St. Paul high school.

St. Paul police were called to Central High School at about 10:30 a.m. Friday on a report of an assault. Officers arrived on the scene and arrested both of the boys.

The older student is accused of slamming a teacher against a wall, choking him until he passed out and then slamming him onto the floor after the teacher tried to break up a fight. The younger student is accused of punching the assistant principal when the administrator tried to help the teacher.

The 15-year-old was charged Monday with fourth-degree assault and obstructing legal process.