I thought that the discussion on ajarn forum net, after the man from SEE interviewed some local MoE officials, pointed out the big differences between Bangkok and up=country. I think there are no rules, no clear rules, no real laws, or no definate guidelines that apply everywhere. There are so many exceptions to the rule that they disprove the rule. It is up to local discretion. It is up to the school owner or director, his connections with the authorities, and the behaviour of each teacher.