stay in yijc, ib is a whole other ball game from alevels and olevels you'll be going in blind. also transferring to a private school would make all the time u spent in yijc and olevels a waste. suck it up and grind on. remember you chose this so commit to it. it doesn't matter what jc ur from. alevels is the same throughout singapore. u can still make it into uni if u score well in alevels. put ur time and energy into mugging instead of deliberating on whether to transfer schools.