Plus One at an Amish Wedding

I am not Amish so I cannot pretend to know their ways and customs. That being said, I have always been under the impression that Amish people do not do schooling beyond 8th grade. So, how did the male lead character manage entirely on his own, to get into college with no high school education, transcript, and make it all the way as a veterinarian? I genuinely don't think it would have been possible. That little mistake kind of stuck in my head the whole movie. The movie was cute and I enjoyed it though. That mom and their beliefs seemed terrifying tbh. It made it seem like the Amish tend to hate everyone who isn't Amish. The Amish ex was really flirtatious which seems also out of character for Amish. The sister had no accent and spoke like a typical teen, so that added to the hard to believe aspect. Still, I really enjoyed it and adored the two leads. They were so great and sweet together and had such believable chemistry. Would love to see them in more, except perhaps on Hallmark and not Amish. Just playing normal American people who fall in love or whatever.