10+2 refers to the 2 years of schooling required post grade 10, currently adopted by high schools in India and Nepal. It is similar to the K12 education system, and equivalent to the French International Baccalaureate and General Certificate of Secondary Education levels in the west. 10+2 refers to two years of schooling post grade 10 in India. A 10+2 school in India thus has grades starting 1 up to 12.
10+2 is replacing the conventional modes of intermediate education - the Intermediate of Science (I. Sc.), Intermediate of Commerce (I. Comm.), Intermediate of Arts/Humanities (I. A.) normally taken by Students post School Leaving Certificate (SLC) provided by Tribhuvan University.
Students in Nepal, either opt for a 10+2 course in Science, Management and Humanities stream under the Higher Secondary Education Board (HSEB) or opt for other options like the British GCSE curriculum under Cambridge University.