A 6th-grade teacher, 20 years ago, wrote in a student’s report card, “invite me to your Harvard graduation!”.
Years later, the student, Christin Gilmer, graduated from Harvard and surprised her teacher by visiting her in class to invite her to her graduation.
Gilmer graduated as a doctor of public health. Prior to her graduation, she went back to her alma mater and surprised her teacher as she was in class teaching.
See video below: