> Was it because it's a stimulant and it helps anyone?
ADHD meds for non-ADHD students don't really help those students perform better academically. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3489818/
They make you feel better, but not actually perform notably better.
From the article you linked:
> These data suggest that when people are given rote-learning tasks their performance is improved by stimulants.
Rote learning was (and still is) one of my big weaknesses. Tools like Anki help but going through them is way easier when I use stimulants. So maybe it depends on the student, but I'm wary of statements like "ADHD meds for non-ADHD students don't really help", it seems more to be pushing an agenda than telling the truth.
In some cases it's really clear, in some others it isn't. A few of my friends did better than me in school, and they had access to Ritalin. They were pretty good student while I was a problem child. I never really explored the option during school as I didn't really know how it worked and what ADHD was. I tried it later in life and it helped with work. Ritalin probably would have helped me during school. But was it because of some "real" ADHD? Was it because it's a stimulant and it helps anyone? Was my ADHD more or less real than them? I know that for them Rilatin and ADHD was a part of their identity, so maybe they convinced themselves they couldn't work without it? I don't think there's any good and objective way to measure that. Should I feel guilt when I take Ritalin now? I can function without it, but they can too. It's just far from optimal.