Section 102(2) in Code of Regulations for Anglo-Indian Schools-Tamil Nadu State
(2)His age shall not be less than 16 and must not exceed 25 years, or in the case of a candidate who has been employed as a teacher in a recognised school for not less than three years, 35 years.The controlling authority may, with the sanction of the Inspector in very special circumstance, admit a candidate whose age does not fall within these limits.