Doesn't matter one whit. Education and knowledge are transferrable wherever. (There have been plenty of Thai kids who've been competitive academically on the world stage when they've had a decent education.)
It's due to the greed of the Thail elite, who refuse a decent education for the masses, while they send their offspring to private schools then overseas to universities, that has resulted in an under-educated general populace. My wife has a couple of nieces who are quite bright, with natural intelligence, but their intellect has been smashed/restrained under the nationalistic indoctrination that passes for public schooling in this country.
They (the Thai elite) could live comfortable lives as upper-middle class and upper class by having a more equitable society but their greed has created this problem and Thaksin is merely a symptom of it.