At the school that I was teaching at in northern Korat, the majority of English teachers could read to an acceptable level, but the same could not be said about their speaking.
It was laborious and constrained, not at all sounding natural, with most words being pronounced with a strong accent, or just plain incorrect. And do not even mention listening!
Not surprisingly, the same could be said about the students. They could read English and do exercises from a book, but not much else. They implored me, and many others, to speak slowly, even though one could not speak slower. The bottom line is their abilities were not good enough. They could barely speak the language, let alone comprehend what others were said. And this was high school students, albeit Matthayom 1 and 2. The administration did not help matters any when they refused my request to use listening tapes.