Developmental Disabilities Institute
Special education school · Ungraded
Smithtown, NY
99 Hollywood Dr, Smithtown, NY 11787
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- BClass size
- A-Years serving families
- B+Diversity
What stands out
- The only special education school in Smithtown
- Small classes: about 7 students per teacher
- Serving families in Smithtown since at least 2011
Developmental Disabilities Institute is a special education school in Smithtown, New York. It has about 101 students and around 7 students per teacher. It has been listed in official private school records since 2011–12. Students attend about 6 hours a day, 210 days a year.
At a glance
- Grades
- Ungraded
- Students
- 101
- Teachers
- 15 (full-time equivalent)
- Students per teacher
- 6.7
- Boys and girls
- Coed · 15 girls, 86 boys
- Religious affiliation
- None (nonsectarian)
- Program
- Special education
- School day
- About 6 hours
- School year
- 210 days
- Library
- Yes
Reviews
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How it compares
- Larger than 67% of special education schools in New York.
- Compared with 89 special education schools in New York.
Students by survey year
Total students reported in official records since 2011–12.
Student body
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Developmental Disabilities Institute
What grades does Developmental Disabilities Institute serve?
Developmental Disabilities Institute serves ungraded.
How many students attend Developmental Disabilities Institute?
About 101 students, with 7 students per teacher, according to official records.
How much is tuition at Developmental Disabilities Institute?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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