Never thought that the day of me passing chemistry would come as I was constantly getting an S for all my CTs. However, with Mr Koh’s dedication (he would meet me before/after every class to clarify my doubts) and patience, I managed to improve to a B in prelims. Even when I sent text messages to Mr Koh regarding chemistry questions, Mr Koh would reply me extremely promptly. Joining Twig for chemistry was really one of the best decisions I made in my A level journey. Once again, thank you Mr Koh!