Well.. I will give one example but i have had more than one
So, it was in fourth grade and my teacher(my favorite teacher) made learning fun for us with games and stuff, it helped me learn better and it made me be excited for school.
And she rewarded us for correct answers which made the whole class try harder
Once i got a D on my report card (Oops) because i missed alot of the lesson she was teaching cause i was sick so she tutored me and helped me get my grades back up to A's