A school in Suffolk is to ban girls from wearing skirts in a crackdown on uniform infringements.
St Albans Catholic High School in Ipswich said it would enforce the ban from September after pupils broke dress code rules.
Parents and pupils have set up a Facebook petition opposing the ban.
School manager Alison Turner said: "Our prospectus lays down a rule that skirts must be from knee to mid-calf length, not tight and no slits are allowed."
She said it had become obvious a significant number of students were not adhering to the rules.
The students and many of their parents have posted comments about the ban on Facebook. They are demanding that skirts be included in the school's accepted uniform once again.
Parent Claire Calver expressed an opinion shared by many of the 159 members who have so far responded to the petition.
She said: "I'm disgusted. I hope the female teachers won't be wearing skirts either.
"The school should reflect the community and I wear skirts in mine."