The principal micromanaged every student's move, earning him the nickname 'Stalin' of the campus.

Stalin 是前苏联领导人约瑟夫·斯大林的名字，在西方文化语境中常被用作比喻"极权统治""高压管控"的代名词。这里用斯大林作为绰号，暗指校长对学生实施类似独裁者的严格管控。