JUDGMENT :

R. Mahadevan, J.

(Prayer: Writ Appeal filed under Clause 15 of the Letters Patent, praying to set aside the order dated 18.11.2013 made in W.P.No.20304 of 2013 passed by this Court.)

1. The appellant herein is the seventh petitioner in a writ petition bearing No. 20304 of 2013, which was dismissed by a learned Judge, along with several other writ petitions, by a common order dated 18.11.2013, which is put to challenge in this writ appeal.

2. At the cost of verbosity, it is worth extracting paragraphs 2 to 4 of the order impugned in this writ appeal, which will give a bird's eye view of the issue involved in this case.

“2. The petitioners in all these petitions were Secondary Grade Teachers in the Government High Schools and Higher Secondary School. They are governed by the Tamil Nadu Educational Subordinate Service Rules and they are under the control of the Directorate of School Education. But, on completion of 10 years and 20 years of their service, they claim Selection Grade and Special Grade pay of Primary School Headmaster, while the Primary School Headmasters belong to a different service and governed by Tamil Nadu Elementary Education Subordinate Service Rules and they