The experience of kindergarten teachers correlates with the income of their students in adulthood
In a study from the National Bureau of Economics children were randomly assigned to kindergarten classes. There were several long term effects relating to college attendance rates, income and other general success factors.
Assigning students to a classroom that is one standard deviation better than average quality in kindergarten generates an increase in earnings at ages 27 of 9.6 percent ($1,520) per year. (Source)
Also impacted where character traits like being prosocial, proactive and having determination and discipline.
Long-term effects sometimes are derived from small decisions (like choosing which kindergarten a child goes to).
It also shows how little impact or power parents often have, on the development and success of their children. The most they can do is trying to decide which environment (kindergarten, school, friends) they grow up in. But even this is often times limited as they can not control for this factor all the time.
Related
- Don't worry about outcomes and focus on inputs instead – as in teachers being the input you can (to a degree) decide upon