Every year the Department for Children, Schools and Families (DCSF) publishes information on the achievement and attainment of pupils in the National Curriculum tests.
Performance Tables
Performance Tables (School League Tables) for Northamptonshire schools can be found on the link below:
However, test results alone will not give you a complete picture of any school.
Directgov - Schools Finder
The DirectGov Schools Finder brings together various sources of school performance information.
You can search for a school by name, town or area, then view its latest Ofsted reports and test results.