[BBrian]

Getting into an international school is tougher than a typical English private school. The parents of the kids at these international schools expect the world, pay the world, and so the school is always under pressure to peform and offer quality teaching and quality teachers.

Private family run schools are by far the easiest schools to get work at. You could always use these schools as your entry and then move on when you have ripened. That's what I did.