The board may erect, purchase or otherwise acquire buildings suitable for school houses, for school administration, and for deriving revenues from school lands, erect temporary school structures, erect additions to, repair, rehabilitate and replace existing school buildings and temporary school structures and may furnish and equip school buildings and temporary school structures and may purchase or otherwise acquire and improve sites therefor, the furnishing and equipping to include but not be limited to furniture, libraries, apparatus, building and architectural supplies, fixtures generally used in school buildings, including but not limited to heating and ventilating systems, mechanical equipment, seats and desks, blackboards, window shades and curtains, gymnasium and recreation apparatus and equipment, auditorium and lunchroom equipment, and all items incidental thereto. The board may use the proceeds of the sale of common school lands or any income from investments of such proceeds in its treasury for any authorized purpose and may deposit the proceeds into any district fund.
     In erecting, purchasing or otherwise acquiring buildings for school purposes, the board shall not do so in such a manner as to promote segregation and separation of children in public schools because of color, race or nationality.