(a) The school board of each public school district shall have authority to establish and enforce a dress code program, which may include school uniforms, for students within the district to promote an orderly, disciplined school environment and to encourage uniformity of student dress. Any school board exercising its authority under this section shall promulgate rules and regulations governing the establishment and enforcement of its dress code program.
(b) In establishing a dress code that adopts school uniforms, the rules and regulations of the school board shall ensure that any uniform required is available at an affordable price, and shall include provision to assist economically disadvantaged students in obtaining school uniforms.