A boy/girl normally gets an idea of what to do in the future, in high school only. Based on which he decides the bachelor course to be studied. The interest varies from person to person. Some have inbuilt interest in community services than in academics. When the school itself gives a chance to do these services, they take it as a platform for them to carry forward. Working on charity, teaching sports to young and poor people, taking communication class / tuition class to the rural people, etc is not paid, but gives a sort of satisfaction or a kind of an immense pleasure.