The State Board of Education, with input from the state advisory council, shall establish policies, standards, and procedures necessary to ensure that a free and appropriate education is available in the least restrictive environment and that a smooth transition from early intervention programs or initial entry into preschool programs occurs for children with disabilities. The Department of Education shall employ at least a full-time consultant in preschool education for children with disabilities. The board shall establish evaluation and placement procedures for students with disabilities who participate in the programs established under this chapter and shall determine certification requirements for teachers and appropriate credentials for all other personnel delivering education or related services in these programs.