except the 2nd petitioner, are working on foreign service in the School Education Department, while the 2nd petitioner is working as Statistical Officer in the Department of Planning and Development. The Government of India introduced a scheme Sarva Shiksha Abhiyan in the year 2002 for the effective implementation of which the Statistical Officers were posted in the School Education Department through foreign service from the year 2002 onwards. The Statistical Officers who worked in the Department of Economics and Statistics were posted on rotation basis and one was allowed to work for a maximum period of 3 years and on completion of 3 years, they would be sent back to the parent department. For which, the Government of Tamil Nadu vide G.O.Ms.No.100 school Education Department, dated 16.05.2018 created one post of Additional State Project Director for the effective implementation of SSA scheme and as per the said Government Order, 30 posts of Statistical Officers were allotted to the School Education Department. Accordingly, the petitioners are working in the School Education Department except the 2nd petitioner who is working in the Planning and Development Department at the office of the District Planning Officer, Karur via deputation. Under such circumstances, the 1st respondent passed the impugned order, dated 09.02.2024 repatriating the posts of 30 Statistical Officers to the parent department on the ground that the requirement of the