Hello parents, I am a Sec 1 student from Nanyang, so I can and only speak on the behalf of the Sec 1 cohort.

Actually, our class was not spot checked in a way that was traumatizing for us. Nails, hair, shoe colour, hong zi, and such. Our form teacher did not come into physical contact with any of us and altogether I found it normal.
However during the assembly some of the upper secondary students spoke about some of traumatizing moments for them and the school is doing their best to resolve the issues.
Please do not believe the wild rumours flying about on the Internet.