The “real substance of education”, as defined by HMCI Amanda Spielman, is the curriculum and from September 2019 the curriculum moves centre stage in Ofsted inspections. This is important for all schools including privately-funded independent schools, since Ofsted evaluates their inspection arrangements and the DfE has confirmed Ofsted as the arbiter of school effectiveness. Tony Powell, Consulting Educationist, considers how inspectors might evaluate the statutory requirements for curriculum provision using the working definition devised by Ofsted during its research programme. Note: This article can only give some pointers about meeting Ofsted expectations because every school must determine its own curriculum. The first pointer is that inspectors will ask senior leaders and a range of staff how this determination was made.