The conduct of the evaluation of classroom teachers and certificated support personnel shall include, at a minimum, the following:

(1) Observation and written comment pursuant to RCW 28A.405.100 by the principal or his/her designee at the school to which the certificated employee is assigned.

(2) The opportunity for the employee to attach written comments to his/her evaluation report.

(3) For certificated classroom teachers, the minimum criteria set forth in WAC 392-191-010; and for certificated support personnel the minimum criteria set forth in WAC 392-191-020. Nothing in this chapter shall be construed to prohibit a local school district from developing an evaluation instrument which contains criteria in excess of those established by the superintendent of public instruction.

(4) When appropriate, suggestions for improvement should be part of the principal's or his/her designee's comments.