Michael Schoch, Answers questions on Noodle
The North Haven Public School District does offer a special education preschool program. I couldn't find information on pre-k programs at Montowese Elementary School specifically, but you can definitely learn more by calling the school at (203) 239-2564.
You can search for other preschools in the North Haven area by using the Noodle preschool finder. The sidebar will help you select schools with a variety of age and cost ranges.
Best of luck in your search and if you need more help, don't hesitate to ask a follow up question!