1. ALL these writ petitions were heard separately. I propose to dispose of the same by this common judgment and order since the question of law involved therein is the same.

2. THE petitioner in W.P. No. 16383(W) of 2010 is the Secretary of the Managing Committee of Dhanyakuria High School (hereafter the school). Four posts of non-teaching staff in the school were vacant at the material point of time, i.e. one post of librarian, two posts of Group 'C' staff and one post of Group 'D' staff. THE West Bengal Schools (Recruitment of Non-teaching Staff) Rules, 2005 (hereafter the 2005 Rules) were the applicable statutory rules regulating recruitment to such vacant posts. On approach being made by the school, the Additional District Inspector of Schools (S.E.), Basirhat subdivision, District 24 Parganas (North) (hereafter the Additional District Inspector) accorded prior permission to the school to conduct recruitment process. Advertisements were published in a daily vernacular newspaper inviting eligible candidates to offer their candidature for recruitment to such vacant posts. Requisitions were also sent to the concerned employment exchange to sponsor names of eligible candida