Ramesh Ranganathan, J.

1. The petitioners, four in number, have invoked the jurisdiction of this Court, under Article 226 of the Constitution of India, seeking a writ of mandamus to declare the Telangana Direct Recruitment for the posts of Teachers Rules, 2017 (hereinafter referred to as the 2017 Rules), in so far as it prescribes the revenue districts, reorganised with effect from 11.10.2016, as the local area and unit of appointment for the purpose of study/residence under Rules 2(5), 6 and 8(1) of the Rules, and Para-V and Para-VI of the Recruitment Notification No.53/2017 dated 21.10.2017 issued by the Telangana State Public Service Commission, for recruitment to the posts of Secondary Grade Teachers (SGTs) in school education, as illegal, unconstitutional, violative of Articles 16(1), 16(3) r/w. Article 371-D of the Constitution of India, and the existing Presidential Order in G.O.Ms.No.674 dated 29.10.1975. A consequential direction is sought to the respondents to hold recruitment to the posts of SGTs, by taking the erstwhile 10 districts as the unit of appointment