There is a lot to learn about the world when you're 14. But I was already programming when I was 14. When I was younger than that, I asked my dad how I could cheat at the qbasic games we had on the family computer: he handed me a 'learn qbasic' book, and told me that all I needed to know to cheat in those games was in there.
Just because the school will focus on software engineering doesn't mean it will lack in other areas. I'm fairly certain I would have done better in math, for example, if the math courses were programming-oriented instead of pencil-and-paper oriented.
It's pretty specifically stated that this is not a vocational school.
A lot of classes can benefit from an injection of programming - a few off the top of my head include statistics, maths, physics...