It is. But that's not saying much.
I may have had to keep a few of the waypoints of the trail in my head for, oh, a week or so, just long enough to scribble it on a history test. Then that information was immediately cleared out to make way for whatever other junk we had to temporarily memorize next chapter.
Only a vague, blurry notion that the Oregon Trail A) existed and B) was a trail to (presumably) somewhere in Oregon remains with me today. Oregon City is certainly not a part of that notion.
Not to shit on the Oregon Trail or Oregon City in particular, of course. I would be truly baffled to meet anyone that retained, in significant detail, even a tenth of what any grade school history class purportedly taught them.
No homework in detention sounds absolutely fucked.
There were a couple times in high school I actually asked to go to detention after class, just to do homework. Because I knew it was a quiet, distraction-free space where I could concentrate on a time-sensitive task. Baffled the detention supervisor, she probably wondered if I was having a bad situation at home I was trying to avoid, but no, just wanted to protect myself from myself. And it was very effective every time.