​​Watch Melissa's video testimonial here:

Winston Ong
St. Hilda's Secondary School

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Ryan Wielson Lim

Currently in Temasek Junior College,

Formerly from Bedok Green Secondary

The short journey I had with Mr Wong of 3 months was a really phenomenal one. He is an inspiring teacher who imparts his knowledge to us as students, and personally, lit a fire under me. Mr Wong’s comprehensive coverage of real-life events and his emphasis on vocabulary has enabled me to drastically improve my linguistic skills.


Lessons under Mr Wong are never mundane as he encourages students to enunciate our views and questions. His notes are all prepared scrupulously by himself and never fails to include occasional tests to engrain our newfound knowledge of vocabulary, enabling us to utilise it in the examination hall. 


Mr Wong's concept of moulding his students into global thinkers, with unique insights of global happenings has allowed me to grasp an A1 in my 'O' Level Examinations after getting a C5 in my SA1. I cherish the humbling opportunity I had to work with one of the most passionate and caring teachers, and I cannot be more thankful to have come under his tutelage.

When I first came to Mr Wong in middle of Sec 3, my English grade was C5. Back then, my command of English was really poor. Furthermore, I didn’t know how to write argumentative essays as I didn't know any real world examples and was very bad at explaining my points.


Mr Wong immediately advised me on how to improve. For example, reading news articles that he gave out during class, and listening to the BBC world service when I commute has helped me to know more current affairs. 
My writing style also improved a lot under Mr Wong. Mr Wong teaches us to use critical thinking and takes us step by step through the thinking process. His teaching is very logical and has helped me improve a lot in my essays.


Mr Wong does not just care about academics, he is also very supportive. He is always concerned for the welfare of his students. Mr Wong also never stops pushing me to aim high. Knowing that I wanted to major in Computer Engineering, he always encourages me to aim high and work towards a PSC scholarship and study at MIT.


Mr Wong is a very inspiring teacher and motivates me to do well in my studies. Before I met him, I was a playful student and didn’t care about my studies. But he encouraged me to work hard, so I studied hard for my O Levels and am now a J1 at Raffles Institution. Thanks Mr Wong!

Not Just a tutor, but an Advisor and Mentor

In a short span of 7 months, Joshua Jumped from a C5 to an A1 for his English 'O' Level Examinations and also came in Top 20 in his cohort

Within 5 months, Kaelyn jumped from a B4 to an A1 and came in top of her

cohort. Now, she is pursuing a Diploma in Psychology at Ngee Ann Polytechnic

Ryan took advice from Mr Wong and attained an A in his 'O' Level

​​Watch Kaelyn's video testimonial here:

I started tuition with Mr Wong in June 2017 after getting a B4 grade for my mid-year exam. I can still vividly remember how pleasantly surprised I was when I attended the first lesson. Unlike other tuition classes I previously attended, there is a distinct difference between him and other tutors.

He made sure that all of us understood what he taught and when we are still not sure, will patiently answer any of our queries. He makes sure that we are aware of the relevant news articles we can use to build the content of our essays and equips us with A1 quality essays written by him.

As for oral, we practise reading aloud a short portion of a passage, this helps us to build our confidence and gradually improve our pronunciation, not forgetting the spoken interaction segment! Additionally, he often shares his personal experiences in different industries that are relevant to deepen our understanding of various topics.

Apart from the knowledge he imparts in class, he went out of his way to advise me where I should go after I received my O levels, even though I was no longer attending classes with him. Mr Wong is by far the best tutor I know as he is a very caring, inspiring, diligent and meticulous teacher who only has his students best interest at heart and I feel privileged to be taught by him.

Wei Yuxin

Currently in Raffles Institution,

Formerly from Temasek Secondary School

​​Watch Ryan's video testimonial here:

​​Watch Yuxin's video testimonial here:

Kaelyn Lim

Geylang Methodist 

Secondary School 

Thaddaeus Kwok
Bedok South Secondary School

Winston improved from a C5 to an A1 within 3 months

Yuxin's transformation under Mr Wong's mentorship

- From a playful student to studying at Raffles Institution

Melissa Guat

Tanjong Katong Secondary School

 I first joined Mr Wong in late March 2015, the same year in which I was taking my ‘O’ level, I was struggling with the monthly Secondary School English common tests, frequently obtaining only a C5 or a C6 grade. The first day I stepped into his class was like an enlightenment as he helped me understand what I had been doing wrong the entire time, His meticulous focus on global issues, critical thinking and current affairs, topics that neither my teachers nor previous tutors ever taught, was the key to me excelling whilst writing Argumentative or Discursive essays.


On the flipside, his imparting of attention grabbing vocabulary and adjectives assisted me during my final examinations where I tackled a descriptive essay, a risky decision on my part but when I received my results I knew it was worth it. The skills and knowledge he provided me with were not only useful for English, but also gave me an advantage for subjects like History, Social studies and Geography.


Mr Wong has helped me tremendously and I improved from a C5 to an A1 in the short span of 7 months. If it were not for him, I doubt I would have ever come close.

Melissa joined TRT since Sec. 1 and is now a Humanities Scholar at VJC

Mr Wong is not your ordinary tutor. He has gone beyond his duties as a tutor to ensure that his students not only excel in their studies, but also in their future education and career. He meets up with students outside tuition hours to catch up with them and find out if he can help his students in any other areas. Mr Wong really puts in the effort to understand his students and their capabilities, so that every student can excel. For me, I was no exception. Mr Wong has met me a couple of times to ensure that I was doing well at home and at school. Even after my O level, he still set aside time despite his packed schedule to discuss with me about my next step, what courses should I take in Polytechnic. As I was interested in the Architecture course, Mr Wong went all the way to link me up with one of his friends, who is an architect in a well-established architecture firm, for internship and I am very appreciative for the support he has given me. I have never regretted joining The Rationale Thinking and I believe many more students can benefit too.   

Joshua Teo
Bedok Green Secondary School

I first joined Mr Wong’s English classes when I was in Secondary 1, back in 2015, and my improvement in English has been evident ever since. 

Due to his progressive teaching methodologies and not to mention, his engaging classes, I could always gain an edge over most of my classmates in terms of the command of the language. This “edge” that I have gained has proven to be effective that I came in 2nd in the whole school. 


Mr Wong is extremely patient in his teaching and he never fails to adopt an inclusive culture as he frequently asks for our opinions on ways to better cater to our needs. 

Besides his aptitude for teaching, an added bonus is the notes he painstakingly prepares for us every week - which include Linguistics for comprehension, essay writing and Oral. With due credit to his efficacious teaching, I attained an A1 for my English O Level paper. I truly believe that if a student comes to Mr Wong as early as in Sec. 1, like myself, he/she stands a good chance to excel in his/her English! Now, I am in Victoria Junior College and have been awarded the MOE Humanities Scholarship. 

When I joined Mr Wong in May last year, I got an E8 for my SA1 English. I was very worried and not doing well for English would affect my chance of going to JC.


My grammar and writing skills were very weak and I could only write argumentative or expository essays. Sometimes I was able to do well while other times I failed. Mr Wong reviewed my papers and immediately came up with a strategy to do well for the final exam and that was to focus on writing Hybrid essays, which is a combination of “Descriptive” and “Reflective” components. I had never done Hybrid essays before and didn't take English Literature at Sec 4. Initially I wasn't sure if I was able to write descriptive essays but he convinced me to try it out and with his model essays and in-house notes on the skills I attempted Hybrid essay during my O Level and got an A2 grade!

Mr Wong also gives a lot of notes on comprehension linguistic skills. These notes definitely helped me to understand more on how to identify the type of comprehension questions and allowed me to be able to answer the question correctly.

Most of us know that when our foundation is weak, it actually takes a long time and effort to correct the problems but I must say that Mr Wong is very effective in correcting the problems and his teaching style is very dynamic. Within 5 months, I actually jumped from E8 to A2!!!

The Rationale Thinking
18 Jalan Masjid, #B1-09 Kembangan Plazasingapore, singapore 418944SG
Phone: 9168 8775 Website: therationalethinking.com