Two young brothers suspended from their school for having long hair have branded the ban as sexist.
A number of pupils were sent home after half term from St Margaret's Church of England School, Aigburth, Liverpool, for having hair past their collars.
Christian Bridge, 14, who refused to get his hair cut, was not allowed into lessons this week. His brother Dominic, 16, also faces a ban.
Head teacher Dr David Dennison said all pupils knew the school's rules.
A number of boys who flouted the rule were warned to get their hair cut over half term.
The school, which only admits girls in the sixth form, declined to confirm how many pupils were suspended after the break.
At least one pupil, Christian Bridge, refused to cut his hair, and was excluded.
Christian, who wants to grow his shoulder-length hair another six inches, said: "Before all this, we had a verbal agreement that I would keep my hair tied back, and I always did.
"There's no way a girl would be told to keep her hair to collar-length, so why should they tell boys? It is sexist."
Both Christian and his brother Dominic, who also has long hair, are backed by their mother.
But Dr Dennison said: "St Margaret's has an excellent reputation for high standards in respect of personal and academic standards.
"Parents are aware of these expectations on application and are regularly reminded of them by newsletter."