@Icarus: it seems that SAR65K will not be enough even for one kid in BISJ high school grades...
What about Thamer (TIS) and Al Waha international schools? Both provide IGCSE/Cambridge International and both fits to 30'000SAR (btw: does this reimbursement amount SAR30K is per child or total for all?) up to the Grade 12.
Any personal experience?
My question is based on:
TIS, Al-Wadi students excel in Cambridge exams - Arab News
http://ksis.sch.sa/FileManager/GetFile/264/ (pages 4 and 5)
Regarding "The next big question": there are some discussions in Fin dept, whether the King meant "all"...