quote " im hoping to go to an English speaking college in Pau next year "
That is not precisely the wise option if you want to start a career in a competitve business in France (or in any country) Best thing to do : go to a french high school or college, then to a local University or "classes preparatoires" so you somewhat become "french" - and then it's up to you. Thousands of british nationals have been doing that before...
Just be advised the level of mathematics in french schools is a little bit higher than in the english-speaking world (I'm talking by experience, having commuted between both worlds for many years)
France can be compared to Russia, with a strong emphasis on "pure"mathematics, when in the anglo-saxon world it's more practical, down-to-earth and business-orientated (statistics and so on)
For that reason, the french theoretical ATPL is more "technical" -read difficult - than the british one (not even mentioning the irish or the american...)