Hullo bro....
if you want them to study in Islamabad then few options are here below...listing them according to the standards they have...they are bit xpensive esp da first 3 but have very high standards in education n xtra curricular activites....
1-
Headstart School (best one)
2-
Ace in Bahriatown (another best)
3-
Froebel's International School (best)
4-
BeachonHouse (although da standard has gown down over da years)
5-
Roots International School (is ok)
i do know though that in Jelum,if you are willing to let them study there then,schools like
1-
Presentation Convent School Jeylum
2-
APC (Army Public School)
3-
Beaconhouse School Jelum Campus are quite few you can think of....but the standard of schools in big cities is much higher than small cities...even same school with different brances have different standards according to the cities....
and plz dun listen to ppl who are forcin you to keep the kids in UK cuz of quality of education....you have no idea how intelligent pakistan students in pak are and by studying from same schools like abuve,they are able to get admission later in the best universities of the world....also the Pakistani doctors n engineers all around da world have their basic n initial education from Pakistan so you can imagine their level of educational grooming etc here in Pakistan...