Sierra School Gilbert (Top Ranked Private School for 2025-26)

875 S Cooper Rd
Gilbert, AZ 85233

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 Facts (2025-26)

Top Ranked AZ School
School Type: Special Education School
Grades: Kindergarten-12
Enrollment: 24 students
Average class size: 15 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

Top Rankings

Sierra School Gilbert ranks among the top 20% of private schools in Arizona for:

School Overview

School Type

Special Education School

Religious Affiliation

Nonsectarian

Grades Offered

Grades Kindergarten-12

Year Founded

2025

School Calendar

View 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

Average Class Size

15 students

Number of AP Courses

15 courses

Tuition and Acceptance Rate

Admission Deadline

None / Rolling

Application URL

Online Application

Source: National Center for Education Statistics (NCES)

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Frequently Asked Questions

What is Sierra School Gilbert's ranking?

Sierra School Gilbert ranks among the top 20% of private schools in Arizona for: Most AP courses offered.

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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