karen,
i smsed mint once on this. theres this scheme of teachers called pro-flairs in the kindergartens and ccs, pretty much prepare children's english profficiency for pri 1. lots of them come from lower socio-eco backgrounds.
pay is from 20-35 per hour, commitment twice a week at least, one hour session, 4 to start a group.
But if you ask me, tuition prob pays better. this pro-flair business, alot of work.. i have a parent who's also a mummy friend, she's doing it for one of the ccs and kns i work with. still an option, let me know if any of the sahms would like to consider. training to be provided by MOE/MCYS depending on which service you work with, typically you can work for both, considered independent contracts