Six Vallejo students are facing felony charges and possible expulsion after allegedly beating and robbing a female school janitor working the night shift.
The assault happened on Friday around 7 p.m. at Springstowne Middle School on Tennessee St. after an academic program held in the school's gym.
The janitor reportedly caught the students vandalizing the school.
Police say the students knocked the janitor to the ground, demanded cash, and then stole her cell phone.
The students were arrested within an hour across the street at the Springstowne Shopping Center, school district spokesperson Jason Hodge said.
Each of the students arrested are boys between the ages of 12 and 16. They attended four different high school and middle schools.
The custodian is expected to make a full recovery.
School District officials will be meeting with union representatives for all district custodians in the coming weeks to develop an enhanced safety plan.
In August, a janitor was robbed at gunpoint at another middle school in Vallejo.
Hodge said there are 78 custodians in the district.
Some work alone, and possibilities for increasing safety include pairing custodians with supervisors, equipping them with Nextel phones, asking police to increase patrols near the schools and making sure all doors on campus buildings are locked while custodians work, Hodge said.