>>47075Not a commercial pilot yet but working on it.
Don't fuck up your maths or English at high school, science and physics help but aren't essential. Some airlines like it if you have a degree in something but other employers don't give a shit one way or the other.
Once you're done at school there are two ways of doing things:
The traditional way is to get your CPL at a local flying school, maybe hang around for some instruction work to get you in the door, but don't stay there too long before moving to a position that gets as many dual engine command hours logged as possible. Stay with that while trying to get into a regional airline, when you get in then build hours with the regional and eventually start applying for airlines of your choice.
Keep in mind that all the jobs you work leading up to full airline employment will have shit pay and most likely shit hours too, but at least you get to fly.
The other way is with cadetship programs that some airlines in some countries are offering, if you make it in they'll send you somewhere to be trained to both their and ATPL standards and provided you do well they'll place you working somewhere for a few years, before letting you enter the airline mainstream. Not surprisingly, getting into a cadetship program is competitive as hell.