The offenses carry penalties up to seven years in prison.

One teacher was treated at a hospital after being hit on the
head with a bat when he tried to stop the attackers, and 18
students were treated for cuts from broken glass and other minor
injuries, Stewart said.

“It beggars belief they would attempt this kind of activity
against innocent students,” Stewart said.

Police were questioning the suspects - who were not identified
because they are minors - about their reasons for the attack,
including whether they were looking for someone in particular.

“The information to us is they were coming here … seeking
someone,” Stewart said.

Police refused to say whether the alleged attackers were
students at the school.