Section 4707. Children admitted to such school

Children not more than
  eighteen nor less than eight years of age may be admitted to or received
  in such school, either (1)  upon  the  application  of  the  parents  or
  guardians  having  the  legal  custody  or  control  of  such  children,
  accompanied by the written consent of such parents or guardians, or  (2)
  upon commitment thereto as truants or incorrigible pupils as provided in
  section  thirty-two  hundred  fourteen  of  this  chapter,  or  (3) upon
  commitment thereto as juvenile delinquents as provided by law,  provided
  that  children convicted of crime shall not be committed to such school.
  Children who have no homes or who are without proper parental control or
  who are under improper guardianship may be sent to and received in  such
  school,  in  the  same manner and under the same authority as in case of
  other children who are improperly provided for at home.