A difficult course mainly due to the bulk of things you have to memorise. I doubt there's really a quota system per se but because of it's difficulties the passing percentage of students is low. Therefore it can be inferred there's some sort of restriction in place due to the existence of the course itself. A law graduate is capable of going straight into chambering but CLP is there to reduce (significantly if i may add) the number of law graduate flooding the market every year.