State board of school examinations(sec) and board of higher secondary examination,tamilnadu popularly known as state board of school examination,tamilnadu.Tamilnadu board of secondary education is valid in all ways,it is approved by Government of Tamil Nadu.It is oldest and amongst the most well known boards in india.The board has controlled the education system in the schools of Tamilnadu and conducts exams twice a year.The tamilnadu board of secondary education also conducts supplementary exams in the state and provides certificates to qualified Studends.It includes various streams such as SSLC stream,the Anglo Indian stream,the Oriental school leaving certificate,the matriculation stream.For 11th,12th standards,it provides higher secondary certificate (HSC), Nearly 7 lakh students appear for both tamilnadu board SSLC exam and tamilnadu board HSC Exams.