At least 45 students were expelled on the first day of the Higher Secondary Certificate and its equivalent examinations for cheating in examination halls, said education ministry officials.
As many as eight teachers were also expelled for helping students in adopting unfair means.
A total of 10,282 students were absent from the Bengali examination on the first day.
The highest number of 29 students was expelled from institutions under the Technical Education Board.
Meanwhile, a large number of examinees and their guardians said they had found it difficult to get to the exam halls because of huge traffic congestions. Many guardians said their children could not reach examination halls in time.
Bokhtiar Hossain, a guardian who was waiting at Mirpur Girls Ideal College examination centre, told the Dhaka Tribune that his daughter had reached the examination hall 30 minutes after the examination started.
In 2013, the number of students taking the HSC and its equivalent examinations was 1,012,581 but this year the number increased to 1,141,374.
Students from 301 new colleges took part in the examinations this year.
Examinations of 25 subjects will be held under creative method. The number of the subjects held under the same method was seven last year.
The creative method was first introduced in the HSC level in 2012 when students sat for only Bengali first paper examination under this method.
Like the previous years, students with disabilities will get 20 minutes extra to complete their examinations.
Theoretical exams will end on June 5 while the practical ones will be held between June 7 and 16.
Education Ministry officials said results would be announced within 60 days of the completion of all examinations.
Meanwhile, rumours were rife in some districts, including Sherpur and Brahmanbaria, that questions papers had been leaked out.
Education Minister Nurul Islam Nahid, however, dismissed the allegation, saying that it was only rumours.
