I don't know if it's the same in your country, Jack, but remember uni can be an added expense too.
Personally I know plenty of pilots with nothing but high school education up to degrees. I only have high school qualifications, school was never for me. I spent too much time flying rather than studying!
Not a commercial pilot yet though...but just do what's best for you as the above poster said.
Becoming a pilot isn't a science, it's an art.