There's no set teaching hours for any phase
Maintained schools need enough time to cover the content set out in the National Curriculum.
Academies need enough time to allow for a broad and balanced curriculum, including for English, maths, science and religious education. That's explained here.
You also need to make sure that you are timetabling appropriate rest breaks for your teachers at some point in the day.
So long as you can meet those requirements, it's up to you to determine how much teaching time will be appropriate for your pupils. The DfE told us this.
When deciding this, consider:
- The age and ability of your pupils
- Your curriculum content
- Your curriculum structure: how you plan to teach what is in your curriculum
- Your school's learning philosophy and approach to teaching
The ASCL suggested this to us.
The 2022 schools white paper sets out a target for all mainstream maintained schools to offer a 32.5-hour week