Simple terms explainer: 

Delegating the preparation of school improvement plans to headteachers means giving headteachers the responsibility to create a plan that sets out how their school will improve learning and performance. The plan should include priorities, actions, and targets based on the school’s needs. While the local authority provides guidance and oversight, headteachers lead the process because they know their school best. This approach supports accountability and ensures improvement plans are tailored to each school.