Section 3005. Leave of absence to teachers for teaching in foreign countries, other states and territories and other school districts

The  trustee, trustees or board of  education  of  any  school  district  may
  permit  any teacher having had at least five years service in the school
  or schools of said district to apply for and receive a leave of  absence
  for  a  period  not to exceed two years for teaching in the schools of a
  foreign country, other states  of  the  United  States  or  any  of  its
  territories  or  in any other school district within this state provided
  such foreign country, other state or territory or other school  district
  shall  have  agreed to furnish a teacher of corresponding rank or school
  level to fulfill the duties of the said teacher  on  leave  of  absence.
  During  the  period  of  said  leave  of  absence the said teacher shall
  receive from the school district the same  compensation  that  he  would
  have  received  had  he  been  present  and  teaching in a school of the
  district.   Such leave of absence  shall  not  in  any  way  affect  the
  retirement rights of said teacher as a member of a retirement system and
  the  period  of  the aforesaid leave of absence shall be credited to the
  total years of service of said member in the same  manner  and  for  all
  purposes  as  if  he  had not been granted said leave of absence and had
  been present within the district engaged  in  actual  teaching  service.
  Notwithstanding  any  of  the  provisions  of  this  chapter,  when  the
  qualifications of the teacher from the foreign country, other  state  or
  territory   or   other   school  district  have  been  approved  by  the
  commissioner of education,  he  shall  be  legally  entitled  to  render
  instructional  service  in  any public school in this state and a permit
  for a period not to exceed two years for such service shall be issued by
  the commissioner of education without the payment of fee.    Any  school
  district  employing  a  teacher  under  this  section may supplement the
  salary received from the foreign country, other state  or  territory  or
  other school district by said teacher.