Very much this. My favorite teacher in Middle School was a Spanish teacher who would actually give me information and printouts about "things we haven't learned yet" when I asked about something we hadn't covered yet.
So many language teachers, if I'd ask about some other part of the grammar after class, would tell me not to worry, and "That's next year." or "You don't need to know that.". So it was a revelation, and a moment I still remember clearly, when I asked something about the future tense, she said "Great question, here, let me make you a copy from next year's book".
I've now completed a Ph.D in Linguistics, and I can't help but think that her finally fueling my interest to learn probably played a role in language being my field.