ยง 3101. Definitions.  As used in this article:
1.  "Teachers"  shall  mean  all full-time members of the teaching and
  supervisory staff of each school district of the  state,  including,  if
  employed  in  such  district,  the superintendent of schools, associate,
  district or other superintendents, members of the  board  of  examiners,
  directors,    inspectors,    supervisors,   principals,   administrative
  assistants, first assistants,  teachers,  school  psychologists,  social
  workers in a city having a population of over one million, lecturers and
  special  instructors,  except employees holding the positions enumerated
  in subdivisions one and two of section thirty-one hundred  six  of  this
  article.
2.  "Year  of  service" shall mean the number of years which a teacher
  has served in the school district in which he is employed including  the
  year for which a determination for salary purposes is made.
3.  Except  in  a  city  having  a  population of one million or more,
  "salary" shall mean the amount of compensation that is to be paid  to  a
  teacher for services rendered during the full ten months period that the
  public  schools  of  the  district  are required by law to be in session
  during any school year. For  purposes  of  prorating  the  salary  of  a
  teacher  not  rendering all the service required of teachers during such
  period, the monthly rate for the services rendered shall be at least one
  tenth of the salary and the daily rate at least one two-hundredth of the
  salary. If any teacher is required to render  services  beyond  the  ten
  months  period  in any school year, the compensation for such additional
  services shall be at least the monthly or daily rate used  in  prorating
  the salary.
4.  "Transfer  credit"  shall  mean  the  credit  given  by the school
  authorities to a  teacher  for  years  of  service  outside  the  school
  district.