A school in West Yorkshire sent home almost a tenth of all its pupils in one day as part of a clampdown on dress code.
On 4 November, 152 pupils at Hanson Academy in Bradford were sent home to change their uniform after coming into school for the day.
The school say "the majority rectified this immediately and returned to school ready to learn."
Some parents have criticised the school over its policy. Linzi Stansfield, the mother of a 14-year-old pupil who was sent home yesterday and today told ITV Calendar that his shoes were deemed a "distraction" and she claims he would have been isolated from classmates had he stayed in school.
A statement on the school's website says the standards are providing "the scaffolding for high standards" and warned parents that new rules would be strictly enforced.
Calendar's Chris Kiddey reports on Hanson Academy's zero tolerance policy on school uniform.