so, my DD turned 3 in November and started pre-school 2 weeks ago. the first 3 days she cried going in but no problems at all after that, as soon as the door is open she got her little bag and is gone without so much as a goodbye 
she has been toilet trained for about 7 months and (unbelievably) has had no accidents at all - she has had 2 in nursery but when i spoke to her she said she was scared to ask to go - i explained to her that its ok to go to the toilet in school and has been fine ever since.
anyway today she was asked by the teacher to do a task to which she said no, after they tried to persuade her to do it, she cried and had a complete meltdown for about half-hour. my CM picked her up and rung to tell me about it as i was in work. it broke my heart to think of her crying for that time, its most unlike her, usually 5 minutes and whatever is it is over and done with!! she was so upset she even wet herself 
anyway, for a 3 year old her speech is not the best. i had her assessed at 2.5 years old as she was not saying a word, but i have to say in the last 6 months she has come on leaps and bounds, she will also try to repeat words and is happy engaging in conversation with people she knows.
she is quiet shy around people she doesn't know, and one thing that was picked up at her assessment is that she is a "thinker". from looking at her grow and develop, anything she is uncertain of or can't do very well she will refuse to do until she is certain she can do it. i don't push her to do these things, but will on a regular basis encourage her to give it a go. The nursery have said she is quiet, and tbh i haven't got a problem with that, i know that with time and the more she settles the more she will come out of her shell.
i haven't had chance to speak to the school about what happened today, and tbh i don't want to be one of those mums who rings for the least little thing. i won't be able to take her to school or pick her up until Friday, until then it will be CM doing it, and she will speak to the school tomorrow to try to find out what happened. i'm thinking maybe she just didn't understand what she was asked to do and didn't quite know how to say "i don't get it" so just refused.
maybe i'm overreacting and its just one of those things and it won't happen again. i think her understanding is ok, the other day she had an ice-cream and a spoon and when she finished i asked her to put the ice cream in the bin and the spoon in the sink - which she done no problem at all.
sometimes when i am reading her nighttime story i will ask her a question about what i have just read, and she will either just blank me or say no if she doesn't it.
anyway, sorry for the long post/boring essay, i would just like your advice on a)whether i should be concerned and b) what can i do to help her with her understanding if it is in fact an issue??
TIA