ยง 2522. General  budgetary  controls;  lapse of appropriations.  1.  A
  separate account shall be kept of each appropriation.  Each such account
  shall show the amount of the  appropriation,  the  encumbrances  against
  such  account,  the  amounts  expended  therefrom  and  the unencumbered
  balance.
2. No expenditure, or  contract  which  in  any  manner  involves  the
  expenditure  of money or the incurring of any pecuniary liability, shall
  be made or entered into by the school district, or officer  or  employee
  thereof,  unless  an  amount  has  been  appropriated  and  is available
  therefor or has been authorized to be borrowed  pursuant  to  the  local
  finance  law.    This  subdivision  shall  not  prevent  the making of a
  contract or lease for a term exceeding one year when authorized by  law;
  nor  shall  this subdivision require a school district which has entered
  into a contract or lease for a term exceeding one year to pay during the
  current fiscal year any amounts larger than those which become  due  and
  owing during that year under the terms of such lease or contract.
3.  Appropriations,  to  the  extent  that  they  shall  not have been
  expended or encumbered, shall lapse at the close of the fiscal year  for
  which  made,  except  that appropriations for capital improvements shall
  continue in force until the purposes for which they were made shall have
  been accomplished or abandoned.
Structure New York Laws
Title 2 - School District Organization
2501 - Application of Article.
2503 - Powers and Duties of Board of Education.
2503-A - Powers of Boards of Education to Ban Fraternities, Sororities and Other Secret Societies.
2504 - Meetings of Board of Education.
2507 - Superintendent of Schools; Associate Superintendents.
2508 - Powers and Duties of Superintendent of Schools.
2509 - Appointment of Assistant and Other Superintendents, Teachers and Other Employees.
2510 - Abolition of Office or Position.
2511 - Purchase and Sale of Real and Personal Property.
2513 - Contracts; Advertisement for Bids.
2514 - Kindergartens, Nursery and Night Schools.
2519 - Adoption of Budget; Publication of Changes; Appropriations.
2522 - General Budgetary Controls; Lapse of Appropriations.
2523 - Moneys; Custody and Disbursement.