In its early days, BIHE functioned like a correspondence school with faculty and students exchanging lessons and assignments via the state-run postal system. Since professors could not deliver lectures openly, they prepared lecture notes and compiled textbooks for distribution to the students. Upon noticing that the government had been examining and intercepting the mail packages to disrupt the university's work, the BIHE devised its own courier service through volunteer messengers, who collected assignments from all the students in a locality by motorbike, sorted them and then delivered them to the professors.