Teaching high school students can be difficult, but notes like this prove it's also very rewarding.

The student didn't sign his or her name, but they have great penmanship for a high schooler in the digital age. (via Reddit)

Graduating from high school can be a reflective time for students. It means the end of twelve years of schooling, and the beginning of responsible adulthood and citizenship. It also coincides with the development of shame, and most high school students have plenty to be ashamed of.

One Redditor, married to a high school teacher, shared this card he claims his wife received at the end of this past school year.

Dear Mrs. Huff,
No matter how rude or idiotic I've been, you've always put up with me and have continued to help me. I know I've been an asshole and a mess the past 2 years, but it never seemed to bother you. I know that I've said some things that you'll never forget, and not for good reasons. But just know that truthfully you'll always be my favorite teacher. You talked to me and helped me to be better able to deal with issues. And have always been generous and nice to me even when I was a Jerk. I can't thank you enough and I'll miss you.
Sources: reddit