Since 1995, ABA has provided private special education programming and services focused on supporting students with targeted academic and behavioral needs.
ABA responds to the identified needs of school districts throughout the State of Arizona, with the purpose of providing special education placement, program development, consultation, and related services for students with special needs.
Our mission is to provide school districts and families with positive, pro-active, and evidence-based solutions that maximize students' individual potential.
As a state-approved Private Special Education Organization, we are compliant with State and Federal regulations regarding the provision of special education and related-services.
Quick Stats (2025)
- School Type: Special Education School
- Grades: Kindergarten-12
- Enrollment: 24 students
- Application Deadline: None / Rolling
- Source: National Center for Education Statistics (NCES)
School Overview
School Type
Religious Affiliation
Grades Offered
Grades Kindergarten-12
School Calendar
Student Body
Total Students
24 students
Student Body Type
Co-ed
% Students of Color
21%
State avg.: 38%
Students by Grade

Academics and Faculty
Total Classroom Teachers
4 teachers
Student : Teacher Ratio
6:1
National avg.: 13:1
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
When is the application deadline for Sierra School Gilbert?
The application deadline for Sierra School Gilbert is rolling (applications are reviewed as they are received year-round).
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