The Directorate of Secondary and Higher Education also instructs the heads to reinforce the 'risky' buildings listed by RAJUK
Initially classes will be held twice a week – on Sunday and Tuesday.
The decision was taken at a meeting at the Secretariat chaired by Md Zakir Hossain, state minister for primary and mass education, on Sunday, said Mahbubur Rahman Tuhin, a spokesman for the ministry.
Previously, the Directorate of Primary Education had said in-person classes would resume for preschools on Mar 20.
The government closed educational institutions in March 2020 due to the COVID-19 pandemic. Schools and colleges were subsequently reopened in two stages, but pre-primary classrooms remained shuttered.
Many educational institutions have been holding online classes to allow students to continue their studies.