Yea, but at my old school, I gave almost half the grade a LUNCHTIME SESH on scaling and aligning that within a week (note: I didn't encourage people to choose certain subjects, I just made them aware).
Needless to say, we ended up having (non-selective school BTW) 94 people doing Phys/180 in the grade, 79 doing Chem, 67 doing Eco and 107 people choosing Extension Maths and 55 people choosing Extension English...
About 47 of the maths people got rejected, and about 5 doing Phys, 12 doing Chem, 20 doing Eco, and 35 doing English Extension 1 LOL.
And I left the school so they couldn't talk to me for their rejections or anything.