The Secretary to the State Ministry of Education, Ranjith Chandrasekera said the decision was taken due to the risks concerning the spread of the novel coronavirus.
He said non-contact sports and training can commence in schools.
Academic activities for Grades 11,12 and 13 students will resume from Monday.
Only teachers assigned to conduct classes for students of Grade 11,12 and 13 will be permitted in schools from Monday.
The Education Ministry has issued directives to conduct classes only between 7.30am and 3.30pm.