I chanced upon this review on Justkids centre together with reviews from other centres. Hope this helps https://mommysboymusings.wordpress.com/2012/11/15/the-dilemma-of-a-mom-when-baby-turns-18-months-old/
I enrolled my girl in Justkids @bukit batok. The environment is big and spacious, school programme follows MOE requirement too. So far we don't have any problem with it.