Hi, no experience of Handsworth but I went to SCGSG and have 2 DD's there. Last year over 1/3 of the girls got 10 A*/A at GCSE.
You have to be careful looking at A level results - the girls have to get at least 5 A's to stay on with at least a B in Maths and English, and then are asked to leave at the end of year 12 if they are not making the grade.(so no wonder A level results look good!)
You can see all the results on the school website:http://www.suttcold.bham.sch.uk/scgsg/i ... am-results
(scroll down to bottom of page for lists of results)
I would look at the results for Handsworth as well and compare.