Is KV not suitable for kids that can't under pressure?

Camom

Just talked to the teacher of my son's nursery school.  She knew that we're going to send our son to KV for K1 but her comment is my son is not suitable for kindergarten with great pressure like KV.  She said so coz my son doesn't like people pushing him to do things that he doesn't want to do.  Also, my son is a bit shy, needs a long warm-up time and his social skill is still very elementary.

My son was born in Aug...he still can't take care of himself very well (quite dependent) but his learning ability is quite good (from our point of view).  He is very eager to learn and knows A-Z, colours & shapes, numbers (he can read numbers from 0 to 30 at least) and English spelling too.  The reasons for us to send him to KV are:

(1) strengthen his chinese and maths (he's only interested inlearning English now)
(2) learn to be more independent and self-disciplined
(3) acquire a good academic background for his future study

Any one can give me some advice on the above?  Thanks alot!