Stockton Accelerated Institute (Top Ranked Private School for 2026)

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About the School

Stockton Accelerated Institute in Stockton, CA, serves 60 students from kindergarten through 12th grade in a city–based Montessori program.
Founded in 1998, the school maintains a student–teacher ratio of 5:1 with an average class size of 6 students.
The faculty includes 90% of teachers with advanced degrees, supporting instructional quality across all grades.
The student body is diverse, with 82.7% students of color enrolled in this co–educational private school.
Stockton Accelerated Institute offers a formal dress code and provides summer school options for continued learning.

Quick Facts (2026)

Top Ranked CA School
School Type: Montessori School
Grades: Kindergarten-12
Enrollment: 60 students
Average class size: 6 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School Rankings

Stockton Accelerated Institute ranks among the top 20% of private schools in California for:

School Facts

School Type

Montessori School

School Membership(s)School Assoc.

Other school association(s)

Religious Affiliation

Other

Grades Offered

Grades Kindergarten-12

Students By Grade

View Data

Distribution of Students By Grade
Grade	Stockton Accelerated Institute
Kind	7
1	10
2	11
3	2
4	4
5	5
6	1
7	1
8	7
9	3
10	2
11	3
12	4

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Year Founded

1998

Summer School Offered

Yes

School Calendar

View School Calendar

Student Body

Total Students

60 students

Student Body Type

Co-ed

% Students of Color

83%

State avg.: 52%

Academics & Faculty

Total Classroom Teachers

11 teachers

Student-Teacher Ratio

5:1

National avg.: 11:1

% Faculty w/Advanced Degree

90%

Average Class Size

6 students

Classroom Dress Code

Formal

Tuition & Acceptance Rate

Admission Deadline

None / Rolling

Application URL

Online Application

Extracurriculars

Total ExtracurricularsTotal Extra-curric.

2 extracurriculars

ExtracurricularsExtra-curric.

Recreational Athletic Programs:

International Student OrganizationRegional Student Conventions

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Frequently Asked Questions

What is Stockton Accelerated Institute's ranking?

Stockton Accelerated Institute ranks among the top 20% of private schools in California for: Highest percentage of faculty with advanced degrees.

When is the application deadline for Stockton Accelerated Institute?

The application deadline for Stockton Accelerated Institute is rolling (applications are reviewed as they are received year-round).

In what neighborhood is Stockton Accelerated Institute located?

Stockton Accelerated Institute is located in the Civic Center neighborhood of Stockton, CA. There are 2 other private schools located in Civic Center.

School Reviews

5.00 out of 5 (2 reviews)

5 9/15/2023

My grandson is in his third year here. The academic approach is excellent. In the areas of kindness, love of the children, helpfulness, safety, adult role modeling, student interaction, fellowship, etc., that I have observed, are above and beyond excellent. I am happy to endorse this school.

- Posted by Parent - Abuelo

5 2/23/2019

I have my children here and very happy. Not every school is perfect but SAIL is as close to it as possible. Love the fellow parents, staff and friendly family attitude.

- Posted by Parent - Jon

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