There are a number of performance indicators for the school.
On the 25th September an Ofsted inspection was made of the school. A copy of the Ofsted letter can be read here:

The full Ofsted report where the school was rated ‘Good’ in January 2014 can be found here: Ofsted Report
Dfe Performance League Tables – these provide an overview of the schools performance and a comparison to similar school across the country.