haiyo...
see....international schools are mainly for your...what you call
'foreign talents' kids to attend. but because some LEE kid went to
SAS, so now, local pple can APPLY to attend international
school.
of course its farking asspensive. cos no gabramen to subsidise mah

and oh no...dun give mi the 'cos FT all rich mah cos children can
attend lor' crap. the FTs in singapore are also mainly the top few
percent back in their home country, and most had to work hard to
get to the position they are in today
and lets say the family moves here when the child
is 16. everyone in local school having O level!!! u wan the child
to attend local school now and fail issit. singapore school
syllabus not the same as everywhere else one ok.
or maybe the child has no english background. international school
have ESL classes. and i can tell u...that a lot of the ESL kids
graduate with VERY good english!
oh yar...the accent...hmm...if pple from singapore go overseas,
your english accent will also be sebei farking weird! hohoho~ they
grew up speaking this way, what you want them to do? 
and yes...LL is right. about the culture thingy. most of the kids
there are what are known as 'TCK' (third culture kids) and we can
relate to each other in school...tats why now eberyone misses high
school

oh yar...and when i attended local school...hmm..i dont mind the
'where is canada? is it winter all year in canada?' kinda
questions. but i HATED it when pple went 'ur canadian so u cant be
chinese. do u live in an igloo and go around in sled dragged by
huskies? i can imagine u with blonc hair and blue eyes' sh|t
if ur stupid n ignorant, no need to show other pple wan ok...oh
yar...and i hated it too how the teachers like to announce to the
whole farking class i wasnt singaporean. every damn day someone
woudl remind mi i was different and i didnt belong and i wasnt
welcomed. at least i spoke singlish. wasnt dissed for that.
most non-singaporeans fit in and liked it A LOT better in
international schools than local schools.
oh...and as for that rich and spoilt kids. u can find them in UWC
and SAS. mainly. those that i know. party hard, play hard, do well
academically and in co-curricular activities and get scholarships
to good unis. and MANY work for their pocket-money. the culture
back at their home is that 'if the kids want something, they work
for it'. not like singapore where kids whine, and parents
give.
ok. rant over.