law: Right of Children to Free and Compulsory Education Act, 2009
  25. Pupil-Teacher
  
  Ratio.-
  1.  
  
    Within
  
  six months from the date of commencement of this Act, the appropriate
  
  Government and the local authority shall ensure that the Pupil-Teacher Ratio,
  
  as specified in the Schedule, is maintained in each school.
  2.  For
  
  the purpose of maintaining the Pupil-Teacher Ratio under sub-section (1), no
  
  teacher posted in a school shall be made to serve in any other school or office
  
  or deployed for any non-educational purpose, other than those specified in
  
  section 27