Section 773. Petition for transfer for incorrigibility

Any institution,
  society or agency in which a  person  was  placed  under  section  seven
  hundred  fifty-six  may  petition  to  the court which made the order of
  placement for transfer of that person to a society or  agency,  governed
  or  controlled  by  persons of the same religious faith or persuasion as
  that of the child, where practicable, or, if not  practicable,  to  some
  other suitable institution, or to some other suitable institution on the
  ground that such person
    (a)  is  incorrigible  and  that  his  or  her  presence  is seriously
  detrimental to the welfare of the applicant institution, society, agency
  or other persons in its care, or
    (b) after placement by the court was released on parole  or  probation
  from  such institution, society or agency and a term or condition of the
  release was willfully violated. The petition shall  be  verified  by  an
  officer  of  the  applicant  institution,  society  or  agency and shall
  specify the act or acts bringing the person within this section.