If you think all your kid does at preschool is sing songs and play games, you’re mostly correct. But that’s precisely what he needs to be doing. These kinds of activities are how kids at this age make connections in their brains. And considering brain development is at its highest during the first four years of life, children can get a lot out of a quality preschool program. In fact, many longitudinal studies show a strong relationship between preschool attendance and success later in life, including improved academic readiness, higher graduation rates, better long term jobs and higher earnings.