Best Special Needs Schools in Mountainside, New Jersey (2026)

The Arc of Union County is a dedicated non-profit organization committed to empowering individuals with intellectual and developmental disabilities (IDD) and their families. Serving over 1,000 children and adults each month across Union County and surrounding areas, the school provides a nurturing environment for students with diverse needs, including language-based learning disabilities and those who are twice-exceptional. The core mission revolves around fostering a full, productive life for all participants through a range of tailored programs and services. These include adult day programs, behavioral health services, workforce development, family support, children's services, and self-advocacy training. The Arc emphasizes a data-driven approach to ensure informed decision-making in all aspects of its operations while maintaining a strong focus on community engagement. What sets The Arc apart is its commitment to low student-to-teacher ratios, which enables personalized attention and support for each individual. Additionally, the school fosters strong partnerships with families to create an inclusive atmosphere that respects and celebrates the achievements of all individuals with disabilities. With its long-standing history of advocacy since 1949 and recognized accreditations from national authorities, The Arc of Union County stands as a pillar of support for those navigating the complexities associated with IDD.