A Victorian mother is demanding answers after her teenage daughter’s armpits were shaved by her teacher as part of the school’s curriculum.

Melissa Woods, mother of 14-year-old Taylah, says her daughter was "extremely upset" when her armpits were shaved in front of two other girls in a classroom.

"I didn’t understand why they had to do it," Ms Woods told radio station 3AW on Thursday.

The teenager, who has a disability, had been enrolled in a life skills program at Wangaratta District Specialist School in the state’s north-east.