1d081462_Some_Clarifications___WBXPress__Clarifications
[Points of doubt] 5. A confusion has arisen about some contradictory words in Note-I below para-2 of the Memo No.181-SE (B), dated 08.10.2009. [Clarifications] 
For removing all confusions. Note-I is being substituted by the following: “Note-I” As the post of Headmaster is not first appointment, nor it may be a promotional one, it should not be considered separately for awarding any benefit of 10/20 years as was being done earlier. But the old cases settled earlier need not be re-opened and the teacher may be allowed to submit option retaining his/her pay (which he is actually drawing) granted earlier.
Pay Fixation of Teacher - Some Clarifications – WBXPress
Clarifications