State Common Board of School Education (Sec.) & Board of Higher Secondary Examinations , Tamil Nadu also known as Tamil Nadu State Board has been entrusted with the onerous responsibility of conducting the Board examinations for the students studying in the State Board in Std X and XII. The mark certificates issued to the students of standard X and XII is considered as a vital and valued document for continuing higher education and for seeking job opportunities.

Apart from above, This Board is conducting examinations and issuing certificate for Diploma in Elementary Education , Government Technical Examinations and ESLC (Eight Std – Private Study). In addition , Scholarship Examinations such as NMMS, TRUSTS and National Talent Search Examinations are conducted by this Directorate.
This Directorate has 7 Regional offices at Madurai, Coimbatore, Tiruchirappalli, Tirunelveli , Chennai, Cuddalore and Vellore. The logistics work for transporting of stationery items related to examinations, distribution of fund for conducting examinations and and distribution of Mark Certificate are performed by this regional offices.