Updated and edited :D Please feel free to add on!

1. I'm not acting cute. I'm naturally cute. – Mrs Chua

2. I wish I could become Junhui. – Jamie

3. I cannot help but rant about my mentor. – MOSAT

4. I'm not shitting you, I'm shitting me! – Jamie in response to Keatying's "Why you shit me?"
   

5. To inspire minds like you – Mrs Eileen Tan's response to Basket's "Why did you become a teacher?"
   

   
   

6. Even when Wu Shuang isnt around you are still so noisy! – Mrs Tham to the class when HRH was in Cambridge
   

   
   

7. I know you are freezing, but I'm melting! – Ms. Claire
   

   
   

8. So you're a mad chemist that can bake! – Ms. Claire on Ming Yang
   

   
   

9. I see you are still as explosive/noisy (the record is unclear) as ever! – Mrs Tham after her return
   

   
   

10. Mrs Ho was very impressed by your class! – Mrs Tham on her leave of absence
    

    
    

11. Do you feel old when you look at the J1s? Cause I do... – HRH and her aging depression
    

    
    

12. I must learn from Jeremy. – HRH
    

    
    

13. I don't want to come and I don't want to pay. – Hanwen on the gala dinner.
    

    
    

14. I'm in a class who believes there is a country ruled by King Chong Ri filled with Al Qaedians! We are all Al Qaedians! This should put me out of my misery! – Ms. Claire on the outrageous claims of Coco and Basket
    

    
    

15. He (Han Ee) knows he is writing a bad essay but he still continues cause he doesnt have enough foolscap paper! – Ms. Claire
    

    
    

16. I heard Swedenland? Where is Swedenland? – Ms Claire on the translation of 瑞士
    

    
    

17. Terrorism had existed since animals were roaming the Earth. It is our nature for us to terrorise others when we find mates or other animals that terrorise our young ... (Incomplete due to excessive laughter) – Jie Hui
    

    
    

18. Children, let's go to E204. Mummy Tham is coming. – TGCXR
    

    
    

19. On the issue of MOSAT trying to deny his laughter,
    

    I smile when I take a photograph. - MOSAT
    

    But there isn't a camera here, is there? – Indeterminate
    

    I can imagine that there's an imaginary camera here *points in front of him* - MOSAT
    

    
    

20. Whining is something only I can do in class. – HRH
    

    
    

21. On the issue of physics,
    

    Do you understand physics? – HRH
    

    *Some time later* What if I said yes? – Indeterminate
    

    Then HRH will throw you into a dungeon for the rest of your life. – Keat
    

    Then what if I said no? – Indeterminate
    

    Then HRH JWS will throw her arms around you and give you a big kiss! – Keat
    

    *Stunned silence follows*
    

    
    

22. Mr. Yeo, you're so nice. - Wang Jue
    

    I'm very obliging. 你要我圓就圓，要我扁就扁. - Mr. Yeo
    

    
    

23. We need a special event in school every day – Kaka
    

    Isn't seeing Moxiang a special event already? – Keat
    

    No, but seeing Kiayee is. – Kaka