NIOS Class 12 Date Sheet 2020: The National Institute of Open Schooling (NIOS) has released the date sheet for the Block 1 exam for Class 12. The exams are conducted twice a year by NIOS. Block 1 exams are conducted in April-May and Block 2 exams are conducted in October-November. The NIOS is one of the largest government-authorized organizations that conduct the secondary and … [Read more...] about NIOS Class 12 Date Sheet 2020 (Released) | Download NIOS Class 12 Date Sheet Block 1 from Here