In elementary school our guidance counselor showed us this video (videos maybe?) that taught things like perseverance, kindness, etc. that kind of thing
It was live-action and featured a knight and a young girl, I think the girl had a magic necklace and it didn't take place in medieval times (despite the knight). It looked like it was from the 90s. I forgot how long it was, which is why I'm saying "video" instead of "movie", it could have been a movie though.
I do remember the horses being pretty important to the plot, for some reason. I don't know why THAT part stood out so much to me. But, that could have easily been only ONE episode in this series...whatever it was.
I wish I knew of someplace that compiled lists of old educational VHSes like this. It's really hard to search through stuff. I've gone through lists of PBS shows, and I don't THINK there are any good matches. It probably WAS some direct-to-video thing. I simply don't know enough about this niche topic to find anything.