It is the intent of the legislature that Sections 37-7-431 through 37-7-435 shall authorize a new and different method of disposing of school lands in exchange for lands of equal value and shall not be construed to be in conflict with Sections 37-7-451 through 37-7-457, Sections 37-7-471 through 37-7-483, or Sections 37-7-501 through 37-7-511, which deal with sales of school property no longer needed for school purposes.