Excellent

#1 of 478 private schools in IN

Top 1% of private schools

International School of Indiana

School

4330 MICHIGAN RD, Indianapolis, IN 46208

Last updated: July 2026

Private

Enrollment

426

Student-Teacher

6:1

Score

9.5

Grades

Pre-K – 12th

Enrollment

426

Student-Teacher

6:1

Score

9.5

Grades

Pre-K – 12th

Data vintage
2021-22

Data vintage2021-22

How this school compares

Indiana private schools

#1 of 478

In Indianapolis

#1 of 64

public schools

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About International School of Indiana

International School of Indiana is a private school in Indianapolis, IN. International School of Indiana serves approximately 426 students, and covers grades Pre-K-12th, and has a 6:1 student-teacher ratio. International School of Indiana has a current MySchoolScout rating of 9.5 out of 10 and ranks #1 of 478 private schools in IN.

Structured state assessment records for International School of Indiana show 47% math proficiency (2025 ILEARN) and 58% reading/ELA proficiency (2025 ILEARN).

What's said publicly about International School of Indiana

Sources: Wikipedia

Synthesized from public, attributable sources. Updated May 2026.

The International School of Indiana (ISI) is an independent private school located in Indianapolis, Indiana, founded in 1994 1 . The institution serves students from pre-kindergarten through 12th grade, with an enrollment of more than 600 students 1 . ISI is recognized as an IB World School 1 . The school provides language immersion programs in Spanish, French, and Mandarin Chinese 1 . Additionally, students have the option to begin learning a third language starting in Grade 6 1 .

Sources (1)

en.wikipedia.org

How it compares3.2 pts above IN schools

9.5

This school 9.5 · Excellent
IN avg 6.3

What Parents Should Know

At 6:1 students to teachers, International School of Indiana sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.

International School of Indiana is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.

Compare to Public Schools

Beta

How International School of Indiana compares to 224 public schools serving similar grades in Indianapolis, IN

Student-Teacher Ratio

6:1

This School

17.7:1

Public Avg

Avg School Size

426

This School

674

Public Avg

Avg School Scout Rating

9.5

This School

5.3

Public Avg

Student Demographics

White 47.2% vs 0%

Hispanic 16.7% vs 0%

Asian 13.8% vs 0%

Black 10.6% vs 0%

International School of Indiana Indianapolis Public Avg

Nearby Other Schools

School	Distance	Enrollment	STR	Rating
International School of Indiana (this school)	—	426	6:1	9.5
Cold Spring School	1.1 mi	369	12.7:1	5.3
Crooked Creek Elementary School	1.6 mi	449	16.6:1	5.1
James Whitcomb Riley School 43	1.6 mi	312	12.5:1	3.0
Herron-Riverside High School	1.7 mi	398	6.2:1	8.5
Shortridge High School	2.2 mi	1,174	14.7:1	8.0
Center for Inquiry School 70	2.2 mi	454	16.2:1	9.5
Liberty Grove Schools	2.2 mi	203	12.7:1	5.0
IPS/Butler Lab at William Bell 60	2.2 mi	615	15.4:1	7.7
Fox Hill Elementary School	2.3 mi	613	16.6:1	6.5
Herron Preparatory Academy	2.3 mi	312	6.9:1	8.9
Guion Creek Elementary School	2.4 mi	579	16.1:1	5.3
Louis B Russell Jr School 48	2.4 mi	270	11.2:1	6.8
Guion Creek Middle School	2.6 mi	872	17.1:1	4.3
Center for Inquiry School 84	2.6 mi	441	14.7:1	9.3
George Washington Carver School 87	2.6 mi	401	13.8:1	5.2
BELIEVE Circle City High School	2.6 mi	279	11.2:1	5.2
IN Math & Science Academy	2.6 mi	535	10.9:1	9.0
Global Preparatory Academy	2.8 mi	701	17.1:1	6.4
Indiana School For The Deaf	2.8 mi	274	4.6:1	4.8
Clarence Farrington School 61	2.9 mi	532	12.4:1	4.5

Showing 20 of 224 schools. View all schools in Indianapolis

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

Preliminary

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in IN.

Classroom Attention

A+ 9.7 / 10

View breakdown

Student-Teacher Ratio 6:1

Instructional Commitment

A+ 9.6 / 10

View breakdown

School Day Length 7.6 hours

Annual Instructional Hours 1,368

Diversity & Inclusion

A+ 9.9 / 10

View breakdown

Diversity Index 70%

Community Context

Data Unavailable

School Profile

A- 8.4 / 10

View breakdown

Enrollment 426

View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in IN

Test Scores IN ILEARN (2024-25)

Math Proficiency 46.7% (2025 ILEARN)

School

State

42.1% (2025 ILEARN)

ELA Proficiency 58.4% (2025 ILEARN)

School

State

40.6% (2025 ILEARN)

Based on 17 test records from IN state assessments. About our data

Student Demographics NCES PSS (SY 2021-22)

White 47.2%

Hispanic 16.7%

Asian 13.8%

Two or More 11.0%

Black 10.6%

Native American 0.5%

Pacific Islander 0.2%

Source: NCES Private School Survey (PSS)

Location

4330 MICHIGAN RD, Indianapolis, IN 46208

Nearby Alternatives

Families considering International School of Indiana may also want to explore other schools in the area. SCHOOL OF KNOWLEDGE (rated 9.0/10, 2.0 miles away), with a comparable rating. Another option is ST THOMAS AQUINAS SCHOOL (rated 8.8/10, 1.7 miles away), with a comparable rating. Additionally, ST MONICA CATHOLIC SCHOOL (rated 8.7/10, 2.2 miles away), with a comparable rating. For more schools in Indianapolis, see our Indianapolis schools guide .

Nearby Schools

20 within 2.1 mi

School	Distance	Enrollment	Rating
Cold Spring School Indianapolis	1.1 mi	369	5.3
SCHOOL FOR COMMUNITY LEARNING Indianapolis	1.1 mi	62	7.8
PURPOSE OF LIFE ACADEMY Indianapolis	1.3 mi	6	—
Crooked Creek Elementary School Indianapolis	1.6 mi	449	5.1
Herron-Riverside High School Indianapolis	1.7 mi	398	8.5
James Whitcomb Riley School 43 Indianapolis	1.6 mi	312	3.0
ST THOMAS AQUINAS SCHOOL Indianapolis	1.7 mi	187	8.8
SCHOOL OF KNOWLEDGE Indianapolis	2.0 mi	297	9.0
HOLY ANGELS CATHOLIC SCHOOL Indianapolis	2.1 mi	115	7.8
ST MONICA CATHOLIC SCHOOL Indianapolis	2.2 mi	334	8.7
Liberty Grove Schools Indianapolis	2.2 mi	203	5.0
CARDINAL RITTER HIGH SCHOOL Indianapolis	2.1 mi	607	7.2
ST MICHAEL-ST. GABRIEL ARCHANGELS CATHOLIC ELEME Indianapolis	2.1 mi	309	8.6
Fox Hill Elementary School Indianapolis	2.3 mi	613	6.5
THE CHILDRENS HOUSE, INC. Indidnapolis	2.4 mi	38	6.4
SYCAMORE SCHOOL Indianapolis	2.6 mi	363	8.5
Shortridge High School Indianapolis	2.2 mi	1,174	8.0
THE ORCHARD SCHOOL Indianapolis	2.6 mi	402	8.5
IPS/Butler Lab at William Bell 60 Indianapolis	2.2 mi	615	7.7
APOGEE SCHOOL FOR THE GIFTED Indianapolis	2.1 mi	25	—

Neighborhood Census ACS (2019-2023)

Census data for ZIP 46208 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$55,435

Median Home Value

$206,000

Median Rent

$1,075/mo

Population

22,026

College Educated

40.2%

Homeownership

55.3%

Avg Commute

20.5 min

Poverty Rate

21.8%

Median Age

32.2

Similar Schools

Schools in the same state with comparable level, size, and ratings

School	Enrollment	Rating
EMAN SCHOOLS Fishers, IN	368	9.1
INTERNATIONAL LEADERSHIP SCHOOL Fort Wayne, IN	279	9.1
HORIZON CHRISTIAN SCHOOL Indianapolis, IN	273	9.0
SCHOOL OF KNOWLEDGE Indianapolis, IN	297	9.0
INTERNATIONAL LEADERSHIP SCHOOL Fort Wayne, IN	284	8.8
BETHANY CHRISTIAN SCHOOLS Goshen, IN	276	8.2

Frequently Asked Questions

Common questions about International School of Indiana

What grades does International School of Indiana serve?

International School of Indiana serves students in grades Pre-K through 12th.

How many students attend International School of Indiana?

International School of Indiana has an enrollment of approximately 426 students.

What is the student-teacher ratio at International School of Indiana?

The student-teacher ratio at International School of Indiana is 6:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does International School of Indiana rank in IN?

International School of Indiana ranks #1 of 478 private schools in IN.

What is International School of Indiana's MySchoolScout rating?

International School of Indiana has a current MySchoolScout rating of 9.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at International School of Indiana?

Based on loaded state assessment records, International School of Indiana has 47% math proficiency (2025 ILEARN) and 58% reading/ELA proficiency (2025 ILEARN).

Is International School of Indiana a private school?

Yes, International School of Indiana is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is International School of Indiana a religious school?

No, International School of Indiana is a nonsectarian (non-religious) private school.

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Neighborhood Context

Walk Score: 5 Car-Dependent
Bike Score: 28 Somewhat Bikeable

Quick Facts NCES PSS (SY 2021-22)

Grades: Pre-K – 12th
Enrollment: 426
Gender Split: 51% M / 49% F
Student-Teacher Ratio: 6:1
Teachers (FTE): 71
Type: private
Coed Status: coed
Affiliation: Nonsectarian
School Day: 7.6 hours
Days Per Year: 180 days
Setting: Large City
County: Marion County
Phone: (317) 923-1951

Resources & Links

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Data sources

NCES PSSSY 2021-22 IN ILEARN2024-25 Census ACS2019-2023 WikipediaSynced May 2026 MySchoolScout Rankings2024 Full details →

International School of Indiana

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