Please select the Educational Board for which you need question papers of previous years. SEBA stands for Board of Secondary Education, Assam and NBSE stands for Nagaland Board of School Education. While in Nagaland, NBSE supervises and regulate the system of education from classes 9 to 12, in the case of Assam, SEBA regulates only till HSLC, while for HSSLC, Assam Higher Secondary Educational Council comes into the scene.