Estyn found management and leadership in education was unsatisfactory, the pace of change had been too slow and not enough had been done to embed and sustain improvements in safeguarding.
Roedd Estyn hefyd o'r farn bod y cymorth i wella ansawdd yr addysgu a'r dysgu yn rhy amrywiol ac nad oedd gan wasanaethau gwella ysgolion ddealltwriaeth ddigon clir o ansawdd yr addysgu a'r dysgu.