The public high school where my wife teaches used to have an in-depth medieval history curriculum across several disciplines.
The science teachers would teach about communicable diseases and estimate the rate of spread.
The history teachers would really dig into the subject matter.
The shop classes would teach woodworking skills and make shields.
The art classes would paint period banners.
The music classes would learn period music.
I would bring in my equipment and do the “How a Knight shall be armed” show.
At the end, 2,000 kids would have a medieval fair and fill the halls with booths displaying their knowledge, skills, crafts, and sell foods to raise money for various student organizations. It was completely awesome. Kids were running around in period(ish) garb everywhere. Then it ended after a few years and they haven’t done it since.
Two other members of my local SCA group are 4th grade teachers at charter schools. They are afforded the latitude to teach medieval history in great detail.