Disturbing claims have emerged that an 11-year-old Tasmanian student with autism was allegedly left isolated and unsupervised in a classroom every day for two weeks.

Seika Purdy went to collect her daughter Jordan, who has autism, from her primary school in Tasmania's south earlier in the week, but claims she found her asleep, unsupervised and alone.

She said it had been happening for two weeks, after her daughter was bullied by another student.

"I cannot believe that in today's day and age it is this bad," she said.

Ms Purdy believes being isolated from other students is impacting her daughter's mental health.

"Jordan has become very isolated from the other students and she can't figure out why, and she's very depressed at home," she said.

"The impact there has been dramatic for her and dramatic for the family."

Tasmanian Disability Education Reform Lobby founder Kristen Desmond was appalled by Ms Purdy's story.

"Situations like this are completely unacceptable and if it doesn't point to the fact that we need active reform of the system right now, this minute, I don't know what does," Ms Desmond said.

She has written to the Tasmanian Education Department demanding a full investigation.

"It's excluding and in some ways it's restraint," Ms Desmond said.

"Exclusion is definitely not a strategy we should be using."

ABC News has obtained footage which Jordan recorded on a mobile phone she took into her classroom at school.

In one video she talks about the areas of the room she is and is not allowed to go in.

"This area over here I'm not allowed to go near, these doors I'm not allowed to go in, I'm only allowed to go into this area ... basically I'm just trapped in this room by myself, alone," she said in the video.

Ms Purdy is planning to move her daughter to a different school.

"I don't approve of the fact that I've had to move her, it doesn't matter what type of school it is they should be able to handle any child," she said.

In a statement, the Government said it was a complicated family situation and cited privacy as a reason to not go into detail.

"The child works on her own, in line of sight of a teacher, as requested by her parent," the statement said.

"At lunch and recess she plays with younger students, as requested by her parent.

"Claims of bullying were investigated, and found to be unsubstantiated."