Here is a link for BBC on Grammar school ranking reporthttp://www.bbc.co.uk/news/education-17857324
. Sorry, if the link does not work. I just copied and pasted the address. You can find it on Education page. The Article "Grammar schools in tougher ranking call" by Angela Harrison was published on 3rd May 2012.Professor Jesson looked at how the schools measured up against each other if ranked on what proportion of pupils got five GCSEs including maths and English all at A* or A grades.
He said: "I am quite surprised by the findings because of the range of outcomes for schools which appear to recruit very similar students.
"The 19 schools in London are really quite outstanding. The South East [Kent and Medway] came lowest.
"More important, there was quite a range of outcomes between schools in each area."
If anyone can provide more leads or references to the report, that would be great. We all are very interested.