Under Mr Koh’s tutelage, I was eventually able to attain my desired grades at the A levels. His notes, organised revision plans, as well as his dedication and commitment to each of his students was a huge contributing factor to my confidence and improvement in chemistry. He is motivating and encouraging even till the very end of my A level journey, whether its after major school exams, or between my A level papers when I felt close to giving up. Thank you Mr Koh !!! 🙂

Mr Koh is a very patient tutor who explains chemistry concepts so clearly and simply that even the most complicated concepts become very easy to comprehend. His notes, especially the summary booklets, are very concise and helpful. He knows which question types are popular for the exams and exposes us to these questions, which makes it significantly easier to study for chemistry in the knowledge of what to focus on. Would highly recommend Mr Koh as a chem tutor!

Mr Koh is really patient and approachable towards all students of different calibre. He adjusts well to meet each student’s needs by monitoring us during class to see if we were able to keep up/understood concepts he had covered. His notes are thorough and well organised, very useful for getting a big picture of everything before exams. Most importantly I enjoyed my lessons and saw a vast improvement in my grades:)

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!

Mr Koh is a highly approachable and engaging teacher! He is able to teach concepts effectively and provides many resources that have been useful in my A Level journey. I also found consultations before and after classes especially helpful and I’m really thankful to Mr Koh for being so patient! Through Twig, I’ve been able to improve in Chemistry ever since joining at the end of Year 4 & I’ve always enjoyed the lessons there:- )

I joined Twig after JC1, and Mr Koh helped me clarify any questions that I had very promptly and taught the Chemistry topics in a very clear and detailed manner. This helped me improve my Chemistry grade significantly. I wouldn’t have been able to get an A for H2 Chem A Levels without Mr Koh’s help!