BANGKOK, Wednesday 9 June 2010 (AFP) - High school test results in Thailand have revealed a failure rate of more than 80 percent in mathematics, biology and computer studies -- among the teachers.

The failure rates for teachers who took exams in their own subjects were about 88 percent for computer studies, 84 percent for mathematics, 86 percent in biology and 71 percent in physics, the education ministry said.

And almost 95 percent of about 37,500 secondary school directors did not score a pass mark in English and technology, according to the ministry.

The poor results have ignited controversy in Thailand about educational standards.

"Even teachers fail, so how can we raise the quality of students?" Education Minister Chinnaworn Boonyakiat was quoted as saying by the Bangkok Post newspaper.

More than 84,000 teachers and school directors took the exams, the first of their kind.