With effort and concentration you will be amazed at how much you can learn on your own armed with the exam board specification and a decent textbook plus access to other online resources. A lot of self learners in fact find it easier to learn themselves without all the distractions of classrooms and teachers, particularly in subjects like maths. A lot of those folk also discover they can learn much faster and something a school or college learns over a term can be knocked out in a few afternoons. As stated here long distances learning courses are without exception expensive and very poor value for money. Why not enrol at evening classes and self learn as well. ?