7. Mr. A. K. Purkayastha, learned counsel for the petitioner, submits that since the petitioner is senior to the respondent No. 9, he ought to have been allowed to function as the Headmaster of Shastrinagar M.E. School upon the demise of the incumbent Headmaster. Referring to the amended Assam Elementary Education (Provincialisation) Rules, 1977, vide notification dated 18.02.2026, learned counsel submits that Rule 3A has been inserted after Rule 3 of the principal Rules, prescribing the method of promotion to the post of Headmaster in Government or Provincialised Upper Primary Schools. The said provision, inter alia, stipulates that the posts of Headmaster and Headmistress of Upper Primary Schools shall be promotional posts and appointments thereto shall be made on the basis of seniority-cum-merit on the recommendation of a District Level Selection Committee consisting of a Chairman, three Members and a Member Secretary.