From time to time, I hear parents and teachers debating the value of teaching elementary school and high school students their Judaic studies in an Ivrit b'Ivrit program - meaning, Hebrew immersion.
The argument I generally hear in favor is that language immersion is a great way to learn the language, and the material being taught is meant to be learned in Hebrew.
The argument I generally hear against is that language acquisition skills vary from child to child, and that a normal-sized class cannot be kept to a pace that will work well for all of them. This results, potentially, in poor learning of both the language and the Judaic studies material.
I am not a classroom educator, and so I have no opinion on the general subject. However, the other day I was asked to comment on teaching Talmud with Hebrew immersion, and I must admit that I'm not sure why this is even a question. Gemara is hard, and certainly for elementary and high school students. Why make things still harder, by using it as an opportunity to teach Hebrew as well? Won't they just learn both subjects poorly?
Or, as I once heard a school president ask, "Would you teach kids Calculus in Greek?"
Of course, the answer is to make aliyah, so that Hebrew won't be foreign, and then Ivrit b'Ivrit will be just fine for our kids...