The main character:

Ms. Fischer was a young teacher in her early thirties. Highly intelligent, but rather shy and introverted in character.

Her subjects, math and computer science, weren't stereotypically female subjects.

Still, the young blonde woman was not your typical nerd type. The only thing about her in that direction was the thick black-rimmed glasses. Otherwise, Gretchen, which was Ms. Fischer's first name, had a great body which she painstakingly looked after and did a lot to keep it in shape. The means of choice for this were swimming, of course, Ms. Fischer had also taken lifeguard certification and Krav Maga martial arts training.

No, Gretchen Fischer seemed vulnerable and helpless at times, but she was able to defend herself. That had earned the petite, but at the same time feminine, young woman some respect from her students. Especially after the story with the rowdy during the big break ...

Note: Since Ms. Fischer only teaches students in the last years of the upper school, all those involved are of legal age.