[Linda&Hanley]

My child started his first school day in early August and things went on pretty well -- he cried for a few days but didn't feel bad about school at all. I can tell because every night he asked me to tell him stories about school, and he seemed to enjoy school more as days passed by. Once he was sick but kept telling me that he was alright to go to school. He said he missed his teachers at school, too.
Yet things started to change since the beginning of September. He cried more often than before in the classroom. He was unwilling to go into the classroom and wouldn't let me go. Last week he even started crying 2 hours before going to school, begging me to let him stay at home.
Naturally parents expect progression, and his 'retrogression' really worries me. I tried talking to his class teachers but they told me that it was not unusual for children to be like that, sometimes without reasons.
My son has always been very attached to me at home and so was he to his teachers in his first month at school. He cuddled them and followed them, and the teachers carried him when he requested. In fact the teachers carried every crying child and tempered them in the first month, and after the transition period, as I was told, no child receives privileges.
If it is the feeling of insecuirty due to estrangement that made a child dislike school, what can a parent do to rebuild the child's enthusiasm in attending school? I'd be grateful if someone could give me some advice.