hmmm.. Nice Topic and Suggestions.. but I agree with PUNK...
If you want to REALLY let your kids go Nuts and grow up in a Rap-buzzed Culture, let em become MUMMY DADDY Nearly all of the above mentioned schools will do Just Fine.
No Offence to any of the students of the mentioned schools, but the ONLY thing they do and are good at is at teaching English.. THATS IT..
As far as the Studies and DISCIPLINE are concerned, I think nearly all of the grownups here would agree that Bahria College, IMCB's and even F.G would be good for that. The Rest depends on your own house environment and how you manage your kids.
I myself studied at Beacon House till 3rd Grade and then my dad pulled me out for the better. Today I cant even read any of my ex-fellows mail cause they have no CLUE about letters and how to where to use capitals and where not to. LOLZ u'd think that such expensive education would teach em that but it doesnt, cause apparently that's how it ROLLS these days.. LOLZ
Apart from my anger towards the modern education culture and misconceptions, My Honest Suggestion would be for your kids to go to Head Start (my relatives kids study there) build up a strong base and start looking for some good NORMAL school where you should put em after 5th grade so that your kids have a realistic approach to the world as well as a strong base.
THE EDUCATION, well if your house environment is good, they would be all fine, else even Beaconites go to the regular academies to improve their education.. so NO school can guarantee that your kids WONT have to go to the academies. Its all down to them. A few of my friends from IMCB NEVER went to any academy and topped in every grade and even today they are much better than I am(at studies ). Hope you get my point.