I'm not pretending to have solutions, and I'm certainly empathetic for all involved. Just stating the reality that this is a suboptimal learning environment.
I don’t want my kid in a classroom where everything has to be repeated in Spanish. It’s already this way for school meetings and it slows information sharing down to a crawl.
If there was mandatory English and Spanish in elementary school classrooms I would consider home schooling.
Outside of certain fields (skilled trades primarily) my children will not need to be proficient in Spanish to be successful in the United States. It’s a nice to have and should not slow down everything else.
If your outcome is students that are more capable at languages but less capable in virtually every other subject, is the result really "more capable and prepared students"? I'm not opposed to bilingualism but you're lying to yourself if you think this comes at zero cost to at least some students.
This really gets my hackles up, because my kids grew up in schools with a 50% Spanish speaking population and my partner is a dual-language teacher in a district where Spanish, Russian, and I believe Vietnamese are all taught as first-languages in specialized classrooms. Your assertion around English is misguided. This isn't to say that we don't need to get our kids proficient in English (it is the lingua franca after all), but there's more here than meets the eye. In my area we are headed toward universal bilingual education, which I see as only a good thing. That means that it may take longer to reach full proficiency, but the overall outcome is more capable and prepared students.