NAGPUR: Even though state education board has released the timetable for SSC and HSC, it has been officially marked ‘tentative’. This has prompted many senior academics in Vidarbha to demand postponement of exam start date at leat by a month till May. Ashnarayan Tiwari, principal of Adarsh Vidya Mandhir (Gandhibagh), said there was no way the course can be completed so soon. “Biggest problem is that everyone is assuming that online classes have been going on as planned, hence course completion is not a problem. Do they even realize that almost 70% of the students do not have access to…