This is absolutely right, as teachers there should be a divide between correcting and bullying. Bullying comes in different ways, over correcting a child without giving allowance for the child to learn on their own in some cases brings about low self esteem, making the chikd feels he/she doesnt fit into anything. You may not know that children also fight battles within and the low self esteem may live with the child for the rest of his or her life except through an intervention.