Age Limit: (As on 01.07.2021) :

As per Section 6 of Special Rules for the Tamil Nadu Higher Secondary Educational Services (G.O.Ms.No. 14, School Education (SE2(1)), 30th January 2020), no person shall be eligible for appointment by direct recruitment to this recruitment, if he has completed 40 years of age, on the First day of July of the recruitment year viz. 2021.

Qualification Criteria (Refer Notification PDF) :
i. Candidates who obtained a Degree (UG/PG) after undergoing a course of one year duration (Double degree / Dual degree / etc.) are not eligible to apply for this recruitment.
ii. Candidates who obtained any of the required qualifications
(SSLC, HSC (or) its equivalent, U.G Degree, P.G Degree, B.Ed
Degree) simultaneously are not eligible to apply for this
recruitment.
iii. As per G.O.Ms.No.361 School Education Department dated 31.12.1999, candidates should have studied the same subject or its equivalent subject in Bachelor's Degree and Master’s Degree.
iv. The candidates not having prescribed qualifications, as on the last date of submission of filled-in online application, shall
not be eligible to apply for the examination. The candidates
should satisfy themselves about their eligibility before applying. It is to be noted that if a candidate is allowed to appear for the examination it does not imply that the eligibility of the candidate is verified. The eligibility shall be verified by the Board only at the time of Certificate Verification.
Note: All qualifying certificates should have been
obtained prior to the last date for submission of filled-in
applications, announced in the recruitment notification.
v. Equivalent Qualifications: If a candidate claims that the
educational qualification in the subject possessed by him/her
is equivalent to, though not the same, as those prescribed
for the appointment, he/she has to produce the subject
equivalence G.O issued by the Government of Tamil Nadu at
the time of Certificate Verification.

For more details Download and Refer the Instructions & Notification PDF.