Dinajpur Education Board has suspended Secondary School Certificate tests on four subjects because of allegations related to the exam papers.
The four subjects are --mathematics, physics, agricultural science and chemistry.
The assessments were slated to be held from September 22 to September 26.
Board Chairman Kamrul Islam confirmed the news on Wednesday.
He said the decision had been made as there were some problems with the questions. "We will look into it."
But Kamrul refused to be drawn on whether the postponement was down to question paper leaks.