6 yr old with low self-esteem

[sezamcgregor]

Bit of background:
My son has not adjusted to school very well - challenging behaviour - hitting, no attention span, cannot sit still etc. We started at a small school (10 children in year, 20 in class) thinking that smaller school would be better, but teacher was very negative and so moved last May to slightly larger school (20 in year) with children from nursery. New school has been wonderful and have referred us to all kinds of different people for support and have a good team now that meet every 6-8 weeks to review.

Had very positive meeting yesterday, but underlying issue appears to be low self esteem.

How do I help to boost it??!!

Any advice or anyone been in a similar situation - I would LOVE to hear about it!!