All examinees from 3,023 institutions have passed the SSC and equivalent exams, according to results published on Sunday.
In 2019, 2,583 institutions had a 100% pass rate.
The schools which registered 100 percent success rate were 1,574 in 2018 and 2,266 in 2017.
A total of 82.87% of this year’s SSC - and its equivalent examinations - examinees passed the test.
The pass rate was 82.2% last year.
Education Minister Dr Dipu Moni handed over a summary of the results to Prime Minister Sheikh Hasina online from her secretariat office at 10:30am.
Later, Dr Dipu Moni revealed the detailed information of the results at 11 pm through a Facebook live programme.
A total of 20, 47,779 students - 10, 24,363 males and 10, 23,416 females - took part in the SSC and equivalent examinations at 3,512 centres from 28,884 educational institutions.