The "Test" DOES have music questions - IF the Department of Education in whatever state wants it. The DoE's decided what will be on the tests based on what they think is important. It should be your DoE who's the target of any rant, but perhaps they just reflect what parents want their kids to learn.

Funny, but I went to gradeschool in the 50s and 60s, and can't remember a single song I learned in school. The songs I DID learn, I learned from my mom, other kids, other kids' parents, girl scouts and church. I never learned the ones in school because we read them out of books, and never had to memorise them. I got basic sight reading education in school, a tiny bit of theory, and education about what different types of music sound like, but the songs all came from my out-of-school education.