How much Hebrew does one learn in Hebrew School?

Hi!

I grew up as secular as they come and am just in a curiosity phase atm ahah

My question is: for someone who goes to Hebrew School, just ur average Orthodox one, for their entire education (like 3-18 or whatever), how proficient do they become in Hebrew?

Would they be able to understand the Torah and prayers without issue (aside from if they already know what it says)? would they be able to get by in Israel (obvs Biblical and Modern Hebrew are different, but they are still very recognisable form one another)? would they be able to form a sentence if they had to (again, I assume that the Hebrew language education is not focused on speaking it, but after a certain amount of immersion and understanding, it’s hard to avoid building up that skill to some degree)? Is it significantly grammar-focused or more just about having practice reading texts? To what extent is it thought like a modern language in the mainstream education system (aside from obviously being more hardcore and immersive)?

A big long way of trying to gauge a simple thing I know, but I just want to get a good idea of how much and in what areas they (or you, if that’s you!) actually learn.

Thanks!!