4. Preschool handicapped child. "Preschool handicapped child" means a person who:

B. Has not reached 5 years of age on or before October 15th;

B-1. Notwithstanding paragraph B, has reached 5 years of age between September 1st and October 15th, is already receiving free, appropriate public education services through the Child Development Services System and whose parent chooses, in accordance with rules adopted by the commissioner, not to enroll the child in kindergarten until the start of the following school year.

C. Requires special services because of one or more of the following:

(1) Visual impairments, including blindness;

(2) Hearing impairments, including deafness;

(3) Speech and language impairments;

(4) Specific learning disabilities;

(5) Orthopedic impairments;

(7) Mental retardation;

(8) Autism;

(9) Traumatic brain injury;

(10) Other health impairment;

(11) Deafness and blindness; or

(12) Multiple disabilities.

4-A.__Regional site.__"Regional site" means a locally