Updated

NAIROBI, Kenya -- The chairman of the Kenyan teachers' union says angry parents are attacking teachers nationwide after their children's dismal performance in a national exam.

Wilson Sossion of the Kenya National Union of Teachers said Thursday that rioting parents have forcefully closed at least 10 primary schools. They are angry that their children failed national exams that determine if the children get into high school.

Sossion says the union is investigating the death of a head teacher from a school in Narok, a town in central Kenya. The man is believed to have committed suicide after the results of all 38 students from his school were canceled over allegations of cheating.

Government statistics show that more than half the 760,000 children who sat the examination last year may not go to high school.