Children education

Hi there, I am new in Riyadh and my two boys, 9 and 13 years old will be joining me as soon as I get my Iqama. Their mother will be coming here too.
Can someone with school-age kids please let me know which is a good school for my two boys. We come from South Africa and get no education subsidy. Therefore need somewhere not too expensive. To me, a family environment at school together with good education is more important than the 'name'.
Could you please advise what my options are.
Thank you,
Martin Clegg

- Learning Caravan School (only upto Grade 3 for boys) but a very good school.
- Manarat School (quality have gone down a bit in recent years) still among more popular ones.
- American international  School
- British international  School
-Multi National School
-Middle East International School (they have American, British, Indian  French curricula)
-king abdulaziz international school

Many thanks Paveen