Yes and no. In world history you typically learn about the rise of different religions and their affect on the world. Knowing the 10 commandments could help teach this for its historical significance. At the same time teaching children the 10 commandments to indoctrinate them to a certain religion is definitely illegal. It’s a hard thing to prove/disprove. A good teacher would teach the 10 commandments and similar beliefs in other major religions. Teachers are wildly underpaid and under supported in the the USA so “good teachers” are sometimes difficult to find.