The board of supervisors, in lieu of proceeding under Section 1906, may provide for the establishment and maintenance of classes or schools in connection with the jail facilities for the education and vocational training of the prisoners. The board, by ordinance, may provide for the establishment and maintenance of school facilities in the county jail, county honor farm, or any county industrial farm or county or joint county road camp, and such schools may be maintained by the governing board of any school district maintaining secondary schools.