|Choice of Secondary Schools|
|1st :||3005 - Crescent Girls' School|
|2nd :||3013 - Tanjong Katong Girls' School|
|3rd :||3512 - Tanjong Katong Secondary School|
|4th :||7021 - St. Margaret's Secondary School|
|5th :||7023 - CHIJ St Theresa's Convent|
|6th :||3029 - Clementi Town Secondary School|
Pity she had a B in CL to accompany her three A*s. 81% of her cohort achieved A and better. You can imagine that her T-score for CL is way below 50.
The top pupil achieved 282. Typically that would be the perfect score. Assuming that the outcomes for all the four subjects are similar, the likely maximum T-score per subject is 70. See this blog for and excellent lowdown on t-score calculations.
A very crude estimate as we do not have any clue about the mean and especially SD for each subject, the T-scores from her A*s should range between 190 to 210. Therefore if CL wasn't an issue and she was just average of her cohort, her T-score is easily beyond 250.