Each school district shall have policies and procedures for transition to preschool programs to ensure that:

(1) Students participating in early intervention programs assisted under Part C of the IDEA, and who will participate in preschool programs assisted under Part B of the IDEA, experience a smooth and effective transition to those preschool programs in a manner consistent with the Part C requirements.

(2)(a) Each school district will participate in transition planning conferences arranged by the designee of the lead agency for Part C in the state. A transition planning conference will be convened for each student who may be eligible for preschool services at least ninety days prior to the student's third birthday.

(b) Within twenty-five school days following the transition planning conference, a determination whether or not to evaluate the student for Part B will be made. The district will provide prior written notice of the decision that complies with the requirements of WAC 392-172A-05010.

(3) By the third birthday of a student described in subsection (1) of this section, an IEP has been developed and is being implemented for the student consistent with WAC 392-172A-02000(1).