At least 15 representatives of educational and labor groups were detained while staging a flash mob in Yangon.
The junta had arrested nearly 20 teachers from the school by Monday.
This time the exodus includes anyone who can afford to go, including not just politicians and activists but much of the middle class, who see no future under the junta.
The National Unity Government has set up community schools and online classes staffed and attended by teachers and students boycotting the junta’s education system.
Ethnic education systems can be a model for a just and inclusive federal union in Myanmar.
Sagaing University of Education Students Union chairwoman Ma Aye Nandar Soe has reportedly been denied medical care.
Poverty by early next year will be at levels not seen in more than 15 years, with a particularly sharp spike in urban areas, the UNDP predicts in its latest report.