Your requirements
You must open to educate your pupils for at least 380 sessions (190 days) in each school year.
However, if your school is prevented from opening for 1 or more sessions and it isn’t ‘reasonably practicable’ to rearrange the sessions for another time, you're not required to make up the lost sessions.
These requirements are set out in regulation 3 of the Education (School Day and School Year) (England) Regulations 1999.
These regulations don't apply to academies or free schools – see the 'Academies' tab for more details.
Rules on teachers' working days
Full-time teachers employed under the School Teachers’ Pay and Conditions Document (STPCD) must be available to teach pupils for the 190 days that the school is open.
They must also be available for work for 5 additional days (INSET days), although they can’t be required to teach on those days.
These requirements are set out in paragraph 51.2 (page 49) of the STPCD.