Developmental Disabilities Institute

Private special education school in Smithtown, NY

In NCES survey

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Public-record details

Address: 99 Hollywood Dr, Smithtown, NY 11787
Phone: (631) 366-2917
Grade level: Ungraded
NCES school type: Special education (2023-24 PSS)
Grades reported: Ungraded
Students (K-12, fall 2023, as reported): 101
Teachers (K-12, full-time equivalent, as reported): 15
Students per teacher: 6.7
Religious orientation: Nonsectarian
County: Suffolk
NCES private school ID: A9300687

Reported to the U.S. Census Bureau's 2023-24 NCES Private School Universe Survey as a special education school (school ID A9300687). The survey does not check licensing or accreditation. Source: NCES Private School Universe Survey 2023-24 (record). Data as of 2026-09-30.

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Figures are what the school reported for fall 2023. The survey does not verify licensing, accreditation, staff qualifications or the disabilities a school serves; ask the school. Schools can move, merge or close after a survey.

Reported data, not a review. Figures are what the school told NCES for fall 2023. Confirm state approval and accreditation, and read our guide to placement and the IEP before you sign a tuition contract.