[+] Show Closed Private Schools in Altadena, California

Altadena, California Private Schools (Closed)

Hathaway-Sycamores School

Gr: K-12

Alternative School

2933 El Nido Drive

Altadena, CA 91001

(626) 395-7100

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Oak Knoll Montessori School

Gr: PK | 112 students

Montessori School

3544 Canon Blvd

Altadena, CA 91001

(626) 345-9929

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Altadena, CA Private School Trends (10-Year)

Private Schools

-8.3% (-1 school) 10-yr

1,351

Students

-9.8% (-147 students) 10-yr

$19,782

Avg. Tuition

+35.4% (+$5,168) 8-yr

Avg. Class Size

54%

Students of Color

+22.7% (+10.0 pp) 10-yr

11:1

Student-Teacher Ratio

+10.0% (+1.0) 10-yr

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Enrollment & Diversity

Category

This Town (Altadena)

This State (CA)

# Schools

11 Schools

3,907 Schools

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Showing 2016–2025. Full 11-year historical data available below ↓

Trends in Total Number of Private Schools
Year	Altadena, CA Total Schools
2025	11
2024	13
2023	11
2022	11
2021	12
2020	13
2019	12
2018	12
2017	12
2016	12
2015	12

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# Students

1,351 Students

659,561 Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Trends in the Average Number of Students Per Private School
Year	Altadena, CA Avg	California (CA)	National
2025	123	180	179
2024	129	175	172
2023	152	181	174
2022	138	189	185
2021	140	185	180
2020	132	179	171
2019	123	179	175
2018	121	173	172
2017	132	179	180
2016	136	173	178
2015	125	162	167

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% Students of Color

54%

52%

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Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Students of Color Trends (2015-2025)
Year	Altadena, CA Avg	California (CA)	National
2025	54%	51%	34%
2024	51%	51%	34%
2023	41%	50%	33%
2022	49%	48%	33%
2021	35%	48%	32%
2020	36%	48%	32%
2019	48%	48%	31%
2018	48%	47%	31%
2017	41%	50%	32%
2016	43%	49%	32%
2015	44%	49%	32%

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0.74

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Showing 2016–2025. Full 11-year historical data available below ↓

Diversity Score Trends
Year	Altadena, CA Avg	California (CA)	National
2025	0.74	0.74	0.65
2024	0.75	0.74	0.65
2023	0.67	0.74	0.65
2022	0.67	0.73	0.64
2021	0.67	0.73	0.64
2020	0.68	0.73	0.64
2019	0.67	0.73	0.63
2018	0.67	0.73	0.63
2017	0.49	0.72	0.61
2016	0.52	0.72	0.61
2015	0.54	0.72	0.61

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Show more data/charts: racial breakdown

# American Indian Students

1 Student

3,574 Students

% American Indian Students

<1%

# Asian Students

45 Students

71,777 Students

% Asian Students

11%

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Showing 2016–2025. Full 11-year historical data available below ↓

Asian Student Percentage Trends
Year	Altadena, CA Avg	California (CA)	National
2025	5%	11%	5%
2024	10%	11%	5%
2023	5%	11%	5%
2022	5%	10%	4%
2021	5%	10%	4%
2020	6%	10%	4%
2019	5%	10%	4%
2018	5%	10%	4%
2017	4%	10%	4%
2016	4%	10%	4%
2015	5%	10%	4%

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# Hispanic Students

152 Students

104,405 Students

% Hispanic Students

18%

16%

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Showing 2016–2025. Full 11-year historical data available below ↓

Hispanic Student Percentage Trends
Year	Altadena, CA Avg	California (CA)	National
2025	18%	16%	9%
2024	15%	16%	9%
2023	10%	16%	9%
2022	11%	16%	8%
2021	11%	16%	9%
2020	11%	16%	9%
2019	25%	16%	8%
2018	25%	17%	8%
2017	10%	17%	8%
2016	10%	17%	8%
2015	9%	17%	8%

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# Black Students

90 Students

30,221 Students

% Black Students

11%

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Showing 2016–2025. Full 11-year historical data available below ↓

Black Student Percentage Trends
Year	Altadena, CA Avg	California (CA)	National
2025	11%	5%	7%
2024	9%	5%	7%
2023	9%	5%	8%
2022	9%	4%	7%
2021	9%	5%	7%
2020	9%	5%	8%
2019	8%	4%	7%
2018	8%	4%	7%
2017	7%	5%	7%
2016	7%	5%	7%
2015	6%	5%	8%

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# White Students

271 Students

235,730 Students

% White Students

32%

37%

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Showing 2016–2025. Full 11-year historical data available below ↓

White Student Percentage Trends
Year	Altadena, CA Avg	California (CA)	National
2025	32%	37%	52%
2024	34%	37%	52%
2023	48%	38%	52%
2022	50%	40%	54%
2021	50%	40%	54%
2020	49%	40%	54%
2019	49%	41%	56%
2018	49%	41%	56%
2017	70%	43%	58%
2016	68%	43%	58%
2015	66%	43%	58%

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# Hawaiian Students

0 Students

5,499 Students

% Hawaiian Students

# Others Students

285 Students

188,707 Students

% of Others Students

34%

29%

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Showing 2016–2025. Full 11-year historical data available below ↓

Other Races Student Percentage Trends
Year	Altadena, CA Avg	California (CA)	National
2025	34%	29%	26%
2024	32%	29%	26%
2023	28%	28%	25%
2022	25%	28%	25%
2021	25%	27%	25%
2020	25%	27%	24%
2019	13%	26%	24%
2018	13%	26%	23%
2017	9%	24%	22%
2016	11%	24%	22%
2015	14%	23%	21%

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All Ethnic Groups

Academics

# Teachers

119 Teachers

55,838 Teachers

Average Student-Teacher Ratio

11:1

12:1

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Showing 2016–2025. Full 11-year historical data available below ↓

Student-Teacher Ratio Trends (2015-2025)
Year	Altadena, CA Avg	California (CA)	National
2025	11:1	12:1	11:1
2024	11:1	12:1	11:1
2023	12:1	12:1	11:1
2022	12:1	12:1	11:1
2021	12:1	13:1	11:1
2020	12:1	13:1	12:1
2019	11:1	12:1	12:1
2018	11:1	12:1	12:1
2017	11:1	13:1	12:1
2016	11:1	13:1	12:1
2015	10:1	13:1	12:1

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% Average Faculty w/Advanced Degree

25%

60%

Average Class Size

17 students

Tuition & Aid

Average Yearly Tuition Cost

$19,782

$17,598

View Data

Tuition Cost Trends (2017-2025)
Year	Altadena, CA Avg	California (CA)	National
2025	$19,782	$18,076	$15,012
2019	$13,475	$14,653	$12,656
2018	$13,475	$14,331	$12,363
2017	$14,614	$13,898	$12,049

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Average % on Financial Aid

28%

29%

Average Financial Aid Grant

$12,000

$9,629

Admissions & Athletics

Average Acceptance Rate

78%

83%

Average Number of Extracurriculars

9 extracurriculars

Average Number of Sports

6 sports

7 sports

Frequently Asked Questions

What are the top ranked private schools in Altadena, CA?

The private schools in Altadena, CA include Pasadena Waldorf High School, Five Acres School, and Pasadena Waldorf School.

How many private schools are located in Altadena?

11 private schools are located in Altadena.

How diverse are private schools in Altadena?

Altadena private schools are approximately 54% minority students, which is higher than the California private school average of 52%.

What percentage of students in Altadena go to private school?

36% of all K-12 students in Altadena are educated in private schools (compared to the CA state average of 10%).

What percentage of private schools are religiously affiliated in Altadena?

18% of private schools in Altadena are religiously affiliated (most commonly Christian and Catholic).

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