She stays in her late 30s

Jenna came to a stop and looked around at the kids assembling in the parking lot. It was rather early for her to be there, considering she had nothing to do with the school so early in the morning, but she had taken the day off and decided to scope out the place. A part of her brain wondered how it would look for a middle-aged woman to be in the school parking lot but she just dismissed it along the lines that she could explain it off as a concerned parent.

Look at all that tits and ass showing, in my day, it wasn't anywhere near as bad, she dimly observed, finding herself more and more wondering about what the exact plan was to be able to protect her son and how the small rock in her hand could help her do it. She had invested too much time in work and supporting their family these past 4 years to really see her son fail now, in his final year, when there were so many opportunities ahead of him. Still, as Jenna looked at the kids mingling around and laughing, she realized simply that she had not thought out things that far. Now that she was there, in school, how would she handle things?

Looking at the kids, Jenna sighed and shook her head. There was no way she could deal with the possibility of becoming young again, young enough to be in high school, nor did she want to try. She had graduated with her teaching degree, that was something that she could always fall back on. As she continued to watch, several adults got out of their cars and some students greeted them with waves and mornings. "I could do that, watch over him during the day and load him up with homework to ruin his nightly plans..." she began.

With the rock in hand, she felt her fist close around it. Simple question: A teacher, counselor, or administrator?