The school effectiveness framework aimed at raising attainment will be introduced in all schools in Wales from 2010, it was announced this week.
Pilot schemes have been taking place in 96 schools over the past year, supported by specially trained headteachers and local authority advisers.
The framework, which is described as the Assembly government's flagship education policy, aims to raise levels of achievement and improve teaching through the sharing of best practice.
A national school effectiveness model will be developed jointly by schools, councils and the government and rolled out to schools from September 2010.
Jane Hutt, the education minister, said: "I want the school effectiveness framework to be the glue that holds together all of our policies aimed at improved teaching, learning and assessment, support, accountability and reform, so that every child - regardless of their background - will have the right to the education they deserve."