children's toilet issues in school

I'm doing this petition to try n get the issue of no toilets in lessons stopped, especially for the young ones n the girls that are experiencing n going though there periods, xxx My daughter n her friends who are around 14yrs have been told that thay are not allowed out of class even if thay need 2change, and one teacher as said that she not allowed 2go n if it goes on the chair then tough,I think.k this is disgusting n needs 2b stopped now. XX