css leave rule 32 pre examination training for sc/st

I m workin in central excise n service tax. I want leave to prepare for upsc mains examination. A state govt institute is providing pre exan training and i want to join it using CSS leave rule 32 which is as under Government servants belonging to the Scheduled Castes or the Scheduled tribes may, for the purpose of attending the Pre-Examination Training Course at the centers notified by the Government from time to time, be granted extraordinary leave by Head of Department in relaxation of the provisions of sub-rule (2). Q. Where can I get the list of centre nofied by govt. For the purpose? Also if state govt institutions providing pre exam training can be eligible under this rule.