Thanks for all the replies 
In response to MrSean's question, I'm from Raffles
Institution, and will be proceeding to RJ for A Levels.
The 10 subjects I plan to take are English, Higher Chinese,
Maths (EMaths and AMaths combined into one subject, but there's a
double weightage), Physics, Chemistry, Biology, Geography,
SS+Philosophy (counted as 1 subject), and Research Education. The
minimum number of subjects you can take is 9, and to qualify for 10
subjects, your GPA has to be above 2.8.