16-year-old Helena Muffly wrote exactly 100 years ago today:
Tuesday, November 28, 1911: Exams are over thank goodness. I made ninety in Algebra, instead of the one I made last month. I must make some good resolutions and study better next month for I have much need to study. Came near missing a day at school.

Her middle-aged granddaughter’s comments 100 years later:
Yeah!! Grandma got 90% in algebra!! In October she’d only gotten 68%. Her studying over the previous couple days apparently paid off.
It’s silly to vicariously celebrate a minor success that occurred a hundred years ago, yet I get so involved in the diary story that it somehow seems appropriate to feel pleased when Grandma had a good day.
I was concerned about that algebra test. Glad she did well.
Me too! Nice to see she got a 90%!
You are not the only one celebrating a 100 year ago accomplishment! 😉