I was on pretty good terms with my chemistry teacher, so...maybe? It's been a while, but I don't remember either showing it off or taking pains to keep it secret. To adults, that is; my nerdy friends and I delighted in showing off the cool stuff we did with our calculators.

I vaguely remember thinking that one likely reason shortcuts like mine were not prohibited was because no one in charge suspected that such things were even possible with current technology, or if they were, that a child would be able to exploit it. But as long as I kept to the letter of the rules, I considered myself ethically in the clear.