Let a person completed his Master degree in Bengali in 1998. He joined a school through SSC in 2005 in the post Bengali (PASS). At that time the school was Jr. High. Now the school is upgraded to Higher Secondary, so there is a vacancy of Bengali (H/PG). He has to take those Classes of XI & XII. In this case, can he apply for PG scale? If yes, what will be the procedure? If not, why?