There's no reason why you can't have that peer-to-peer tutoring beyond that one classroom. Imagine what happens if that student in Calcutta all of the sudden can tutor your son, or your son can tutor that kid in Calcutta.
限るべき理由はありません カルカッタの生徒が 突如皆さんのお子さんを教えはじめ 皆さんのお子さんも カルカッタの子どもに教えるところを 想像してみてください