16-year-old Helena Muffly wrote exactly 100 years ago today:
Thursday, February 8, 1912: I didn’t study much this evening. We have two more examinations tomorrow. Will be glad when they are over.
Her middle-aged granddaughter’s comments 100 years later:
Grandma’s diary entries that I’ve posted over the past two weeks indicated that she was working really hard on algebra. In January her teacher caught her cheating—and she’s really been trying to turn a new leaf. And, the entry I posted yesterday indicated that Grandma missed some questions on the history exam because she’d studied the wrong things.
I’m keeping my fingers crossed that all went well with the remaining exams.
A Hundred Years Ago 
Me too!
One of the things I most enjoy about your grandmother’s diary is the absolute openness of a teenager. Her thoughts just burst out, unedited, so that we have a different kind of view of life back in her day.
It is fun to see how her thoughts burst out! Since I knew her as an elderly woman–I also enjoy trying to reconcile how she seemed then with the teen that I’m getting to know so well.