Music teacher unfairly 'asked to leave'

[supersop60]

I am a self-employed music teacher, working as a peripatetic in a school. One of my colleagues has been asked to leave by the (very new) head of department.
She has had a couple of complaints about her teaching methods - she is Russian and very strict - but instead of moving the students to another teacher, he has asked her to leave. She is brilliant at her job, gets excellent results, and does a lot for the school by way of accompanying concerts, exams etc.
My question is - do peri teachers have any rights? can the rest of us make a stand (protest) and keep our jobs?
Any experience of this or opinions?

[Oneminuteandthenallgone]

What does your contract say? Did you issue the contract or did they?

There will be terms by which a contractor can be terminated.

[supersop60]

Since we are self-employed, we have a visiting teachers' agreement, but no contract as such. The school issued the agreement, and I'm going to have a look at it now.