(3) Special Classes or Schools Established and Maintained by School Districts. Except as herein otherwise provided, it shall be the duty of the board of school directors of every school district to provide and maintain, or to jointly provide and maintain with neighboring districts, special classes or schools in accordance with the approved plan. The Secretary of Education shall superintend the organization of such special classes and such other arrangements for special education and shall enforce the provisions of this act relating thereto. If the approved plan indicates that it is not feasible to form a special class in any district or to provide such education for any such child in the public schools of the district, the board of school directors of the district shall secure such proper education and training outside the public schools of the district or in special institutions, or by providing for teaching the child in his home, in accordance with rules and regulations prescribed by the Department of Education, on terms and conditions not inconsistent with the terms of this act or of any other act then in force applicable to such children. However, the institution of special classes and programs at the secondary level for exceptional children who are gifted and talented students may be deferred until September 1978 at the discretion of the board of the school directors of any school district. In addition to the above and in accordance with rules and regulations prescribed by the Department of Education, homebound instruction shall be provided for children confined in detention homes as provided in section 7, act of June 2, 1933 (P.L. 1433, No. 311), as amended, for the period of their confinement, if their confinement exceeds or is expected to exceed ten days, even though such children are not exceptional.