Finding highly skilled teachers can be quite difficult. This is basically down to the relatively low pay people can expect to receive for teaching in certain areas, such as those whom have degrees in maths and sciences (where careers in industry with these skills can pay considerably more). Often times what ends up happening is lower skilled individuals end up taking on careers in the teaching profession, which sometimes translates into worse standards in education in those subjects.

There are things that can and in some cases are being done to encourage some of the more highly skilled math and science university students to enter a career in teaching, including additional funding for their university degrees. This system is reminiscent of what is offered by the military for certain professions (such as a medical education), whereby additional funding is supplied to their education in return for a commitment of a set period. So, by agreeing to become a teacher for a few years, you could end up receiving a significant contribution to your own education.