Tonight, my uncle and cousins encountered a taxi driver sidelining as a linguist (or is it the other way around?). His name is Vicente (just like my uncle) and he speaks several languages including English, Tagalog, Cebuano, Hiligaynon, even Japanese. He seemed to be a smart, learned guy. I wonder which language he uses to teach his kids. Experts say that the best language for teaching is the child’s first language. I expect it would. Of course, the educational material, e.g. books, would also need to be on that first language. It’s easy to say there’s no reason why we can’t develop material for a particular language since the Japanese, Chinese, etc were able to do it. But those languages have millions of users with a huge pool of domain experts. If you are to take that concept here, you’re talking a dozen languages with a few million users each with a smaller percentage of domain experts much more those capable of developing educational material. I say instead of changing the language used at school, change the first language to the one used at school be it primary, secondary, tertiary, or beyond.