Upon the adoption of the resolution as provided in section forty-seven hundred one the board of supervisors or other governing elective body shall purchase land in some conveniently accessible place in the county to be used for the purpose of such school. They may acquire such land by gift, purchase or condemnation. The land when so acquired shall be held in the name of the county for the benefit of such school. Upon the acquisition of such land such board or body shall erect the necessary buildings and suitably equip them for use. Such board or body may also provide for the improvement of existing buildings and make such repairs and alterations on the buildings upon the land used for the purpose of the school as may be necessary for the maintenance and operation thereof.