In determining whether a professional employee shall be dismissed for unsatisfactory teaching performance as provided for in section 1122(a), and in rating professional employees and temporary professional employees, each professional employee and temporary professional employee shall be rated through the use of a rating tool approved by the department in consultation with education experts, parents of school-age children enrolled in a public school, teachers and administrators, including research and collaboration conducted by the department.
24 P.S. § 11-1138.2