NLEs are outstanding headteachers or principals who use their skills and experience to support other schools. NLEs own schools are outstanding, with consistently high levels of pupil performance. NLEs support schools in the most challenging circumstances. The focus of the NLE is to assist the supported school in making significant and sustained progress. Support could be provided by working alongside the existing headteacher or through consultancy support, with some staff from the National Support School (NSS). Four headteachers within the alliance are NLEs.