A knife call at Robert Bateman High School in Burlington has ended with the arrest of a teen but there is still a question of charges.
Halton Police say it started out with a fight outside the school on New Street about one in the afternoon.
It's alleged a boy went back into the school and theatened other students with a small pocket knife in a boys' washroom.
As it happens, police were at the school for an assembly and were quickly able to respond to the situation.
No one was injured.