One of the psychic rewards of teaching is discovering that students remember you as the person who changed their life. They probably never knew the name of the superintendent, forgot the name of the mayor and the governor, but they never forgot that one extraordinary teacher.

This recently happened to a sixth-grade teacher in Arizona. She wrote an encouraging note to one of her students and told the student to invite her to her graduation from Harvard. Sixth grade!

Twenty one years later, that student invited teacher Judith Toensing to Harvard to see her receive a doctorate of public health.

“Judith Toensing didn’t just teach her students, she inspired them.

“A sixth-grade teacher from Yuma, Arizona, Toensing made a strong impact on one of her students 21 years ago.

“At the end of the school year in 1997, Mrs. Toensing, wrote a note on the student’s report card: “It has been a joy to have you in class. Keep up the good work! Invite me to your Harvard graduation!.”

“This week, the student, Christin Gilmer graduated from Harvard as a doctor of public health.”

Gilmer saved her teacher’s note all these years. She invited her teacher to the graduation ceremony.

“Dean Michelle Williams thanked Toensing — and all public school teachers — for the “immeasurably important” work they do.

“You don’t just teach young people. You inspire them, and you propel them along a path of fulfillment and service to others. Your work is what makes our work possible,” Dean Williams said.”

Teachers matter.