OFSTED stands for The Office for Standards in Education. OFSTED is the regulatory body for childcare providers and are also responsible for carrying out school inspections in the UK.
Ofsted is the Office for Standards in Education in the United Kingdom. They make sure that every education building and program is up to the current standards.
According to the most recent Ofstead inspection, the College of West Anglia was rated a grade 2 which is considered good. This is down from their 2007-2008 ranking of a grade 1 which is considered outstanding.
It is totally a matter of opinion however Tomlinscote's most recent Ofstead report graded Tomlinscote as an 'outstanding' school. Also, in recent years, student at Tomlinscote have tended leave school with higher GSCE and A Level results.
The William Penn School (North Dulwich) no longer exists. It was labelled as a failing school by ofstead and renamed the Dulwich High School for boys in 1996 as part of a £100,000 public relations exercise. The school was closed three years later after further poor performance. The school buildings have now been taken over by The Charter School.