http://www.nytimes.com/2010/03/10/education/10educ.html
This sort of article, maybe?
Btw, does that wiki article state if demands on the student to get into secondary education are higher in the UK than in the USA?
Or this one:
http://www.edgetech-us.com/map/EduLvls.htm
Seems the south east is underperforming at least.