Grammar fix

school holiday

break from school

A period when students do not have to go to school, usually for a few days or weeks.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

Many families go on trips during the school holidays.daily life
During the school holidays, I usually try to learn a new skill or take part in a short course.IELTS speaking

Pattern: school holiday (noun phrase); on/during/over the school holiday(s)

WrongWe travel in the school holiday.

RightWe travel in the school holidays.

Usually plural 'the school holidays'.

Patternschool holiday (noun phrase); on/during/over the school holiday(s)

Choose the version that sounds natural in speech.

Stiff The pupils are presently on their scheduled educational recess.

Natural The kids are off for the school holidays.

'School holidays' is plain; 'scheduled educational recess' is absurd.

Words that usually travel with it.

school holiday + context
the school holidaysduring the holidayssummer holidayshalf term

Not the same as a public holiday, which is a day off for everyone, not just students.