Yeah, it’s called a CELTA and it costs about 800 GBP to earn, not including textbooks, travel, living expenses, and the time involved…that is, if you can get accepted. I think requiring people to spend 800 pounds would be enough to weed out the unserious, but also those who may be economically disadvantaged as well. Besides, the way some schools work, simply being able to speak English comprehensibly is the only requirement you need to meet. I’d like to think that these kinds of schools are going the way of the dinosaur as children “graduate” from their programs not able to do more than recite their ABCs and name off 1000 vocabulary words without an ability to put them together in any useful way and parents see that all that tuition money was for nothing, but they will be one bad case of parasites to shake off, especially as long as there are teachers willing to do their biding and keep that standard of learning low.
It would be nice to formulate a test, but I think it would be better to do so on a school to school basis since some schools have different methods of teaching English - eg. immersion, bilingual, etc. and different ages and abilities for teaching. A real course (instead of the one-week thing offered during Chinese New Year) would be beneficial to all, but who would sponsor it and how could you convince English schools out there to set up incentives for completing such courses?
It is my opinion that any place that is a hotspot for English teachers should have professional training courses available. It doesn’t have to be an International House, but even the local universities could host a part-time course maybe once or twice a year for teacher training instead teachers who want to learn how to teach effectively having to travel to another country to do so. Don’t get me wrong. All the training in the world cannot make one a good teacher, but even people who have no training and are decent teachers would benefit from learning different approaches and methods to teaching as well as any course that could give them insight on how to understand and motivate their students’ learning.