Two 18-year-old men and nine teens under 18 face a total of 34 charges in connection with a Sept. 7 "hazing party" held about three kilometres outside of the town, the RCMP announced Monday.
The party was an annual "freshie" party that allegedly included the hazing of some Grade 9 and 10 students by senior students of the high school.
Police were told the hazing involved students having eggs, flour and chocolate syrup poured over them.
Some of the victims suffered injuries after being paddled with hockey sticks, police said.
The injuries include severe bruising, with one victim sustaining muscle damage to his leg and buttocks.
The charges include assault, assault with a weapon and assault causing bodily harm.
All 11 are scheduled to make their first appearance in provincial court in Humboldt on Oct. 21.
Lanigan is about 125 kilometres east of Saskatoon.