I think that it is impossible to eradicate all unpleasant people or incidents from our lives, just as is is impossible to eradicate all virulent pathogens. Everyone then has to make the choice of how far they will go to avoid the virulence, how much they hide from it, how much they will try to sanitise their environment, and what they do when they encounter such virulence. Everyone has a right to live their livf, decide what they want to do, what is right for themself, and I would hope that other people do not fault their decision.
So if I know that someone has encountered verbal (or physical) abuse I would gently suggest that they have a choice in how to proceed. The person can
1. Continue to stay in that situation and plot to kill themself.
2. Stay in that situation and plot to change the situation. In this case if the teacher says that the child is too fat, then the child may want to prove the teacher wrong by dancing more, eercising more, try mindful eating and improve her weight. Or she can (inside or outside the CCA) form another dance group of kids with a similar appearance and gain recognition that physically divergent people can succeed in dance.
3. Remove herself from the situation. In this case, leave the CCA. You can always find success elsewhere. Or join another CCA meanwhile take provate dance lessons and go on to perform in public with the latter to show that CCA teacher that you can do it.
4. Make enough noise and fuss so that someone in authority (the HOD, parents, Principal, MOE, the SIngapore Government, everyone reading your post on the internet) takes notice and disciplins the teacher.
5. All of the above. The above list of possible actions is by no means exhaustive, or mutually exclusive. I can choose option 1 and 4. Or to go from option 1 (because crying and starring in my mental movie of revenge feels so GOOD!) to option 2, to 3 etc.
Life is not a choice between an answer that is totally right, or totally wrong. Neither is it a mutiple choice question where only one choice is correct - unlike academic tests that we all know but too well and are too well trained in. Actually, I suspect every answer is right, can give joy and satisfaction; and at the same time wrong as in it may also result in undesirable consequences. For instance, if option 4 results in the CCA teacher being fired from his job, well, the teacher may be horrid in the CCA, but great in teacing his or her academic subject,; or other students may think that this teacher is a great dance teacher, or a particularly dedicated and enthuaistic dance teacher.
I think that almost all of us can recall instances where we were hurt by a teacher’s comment or action. The HOD sarcastically commented on my poor PSLE results. Well, I did not agree with her assessment, and set out to proove her wrong by doing well in my O and A levels. In the meanwhile sometimes I enjoyed running that movie in my mind of suicide and revenge. In later years, that HOD was happy to count me as one of her successes.
Different people find motivation in different guises. Some through encouraging words, some through disparaging words, and yet other need to feel it to do it, or to go through the experience of failure to find the drive to succeed. And we are our own arbitor of how to define success, or indeed when to define if we have succeeded. As long as there is life. there is always opportunity to turn things around.