Babies and toddlers usually have a really high self-esteem, while the ‘tweens’ usually don’t. By the onset of adolescence, kids have their lowest self-esteem. And that’s probably because, when kids are young, there are lesser expectations from them. As they grow older, parents, teachers, schools, peers and just about anyone in the world, expect more. A lot of things contribute to low self-esteem in kids. Here are some common reasons.