Between May 2 and Tuesday, about 9,914 test takers filed complaints or logged on to check their answer sheets following the third round of O-Net/A-Net score announcements.

"We discovered that most of them didn't actually have any problems, and for those who did have problems, we have solved them already," the agency's acting director Prateep Chankong said yesterday.

However, as more test takers were lodging complaints yesterday, he said it would take a bit more time to solve them.

The O-Net (Ordinary National Educational Test) and A-Net (Advanced National Educational Test) are vital this year because they are being used as the main admission criteria for university. However, all three rounds of score announcements have been mired by errors.

Education Minister Chaturon Chaisang said that although the errors affected only a small portion of test takers, there should never have been any mistakes in the first place.

He vowed to prevent any errors from happening in the future. "We are going to hold seminars to listen to the opinions of relevant parties," he said.

Pavich Thongroj, who heads the Office of Higher Education Commission, said the number of students who had applied to universities via its online system was 95,673 so far. He expected the number to surpass 120,000 before the May 18 deadline.

In a related development, the Consortium of Thai Medical Schools yesterday announced it was planning to update its list of successful applicants by May 14, to allow students enough time to apply to other universities through the central-admission system if they failed to get a seat at medical schools.

The names of successful applicants were announced earlier this month. However, as the testing service has revised the scores of many test takers during the past several days, it is possible there will be changes.