Here is a school site from Essex that has some
inspiring work:
http://www.juliastubbs.co.uk/index.html
Art Teacher Julia Stubbs
William de Ferrers School,
Essex, UK
It features artwork done by students at KS3 to KS4
(age 11-14), GCSE (15), AS (16) and A2 level (17).
There is also some primary school work.
AP teachers may want to browse the portfolios. There
is some high quality work.
I have this school linked on my Art Teachers page and
on Art Departments (secondary) on IAD.