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Oster Elementary School

1855 Lencar Way
San Jose, CA 95124

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10/

Top 5%

Tel: (408) 266-8121

oster.unionsd.org

SAVE SCHOOL

Serving 627 students in grades Kindergarten-5, Oster Elementary School ranks in the top 5% of all schools in California for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).

The percentage of students achieving is 79% (which is higher than the California state average of 33%). The percentage of students achieving is 81% (which is higher than the California state average of 47%).

The student:teacher ratio of 24:1 is higher than the California state level of 21:1.

Minority enrollment is 76% of the student body (majority Asian), which is lower than the California state average of 80% (majority Hispanic).

Quick Stats (2025)

Grades: Kindergarten-5
Enrollment: 627 students
Student:Teacher Ratio: 24:1
Minority Enrollment: 76%
: Top 5% in CA
: 79% (Top 5%)
: 81% (Top 5%)
: 70-74% (Top 5%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

Oster Elementary School ranks among the top 20% of public schools in California for:

School Overview

Oster Elementary School's student population of 627 students has stayed relatively flat over five school years.

The teacher population of 26 teachers has stayed relatively flat over five school years.

Grades Offered

Grades Kindergarten-5

View Data

Distribution of Students By Grade Trends
Grade	Oster Elementary School
Kind	110
1	100
2	102
3	107
4	104
5	104

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Total Students

627 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Oster Elementary School
2023	638
2022	629
2021	626
2020	657
2019	657
2018	581
2017	581
2016	553
2015	526
2014	535
2013	531
2012	501
2011	491
2010	474
2009	446
2008	433
2007	444
2006	458
2005	459
2004	298
2003	289
2002	284
2001	339
2000	361
1999	379
1998	385
1997	412
1996	395
1995	421
1994	391
1993	426
1992	411
1991	400
1990	400
1989	390
1988	375
1987	347

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Gender %

Total Classroom Teachers

26 teachers

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Total Classroom Teachers Trends Over Years (1990-2023)
Year	Oster Elementary School
2023	26
2022	25
2021	25
2020	26
2019	26
2018	23
2017	23
2016	22
2015	22
2014	22
2013	23
2012	23
2010	22
2009	23
2008	23
2007	21
2006	22
2005	22
2004	15
2003	13
2002	14
2001	16
2000	18
1999	21
1998	20
1997	20
1996	18
1995	18
1994	17
1993	23
1992	17
1991	17
1990	21

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School Calendar

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School Rankings

Oster Elementary School ranks within the top 5% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).

The of Oster Elementary School is 0.67, which is more than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.

This School

State Level (CA)

#306 out of 9602 schools
(Top 5%)

View Data

Overall School Rank Trends Over Years (2010-2022)
Year	Oster Elementary School
2022	#306
2019	#478
2018	#301
2017	#230
2016	#308
2015	#405
2013	#445
2012	#856
2011	#950
2010	#1148

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79%

33%

View Data

Math Proficiency Comparison Over Years (2010-2022)
Year	Oster Elementary School	California	Union Elementary School District
2022	79%	33%	73%
2019	78%	40%	76%
2018	81%	39%	75%
2017	82%	38%	75%
2016	76%	37%	73%
2015	72%	34%	69%
2013	88%	59%	84%
2012	84%	59%	85%
2011	84%	58%	83%
2010	79%	56%	81%

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81%

47%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Oster Elementary School	California	Union Elementary School District
2022	81%	47%	75%
2019	79%	51%	78%
2018	82%	50%	75%
2017	82%	48%	78%
2016	84%	48%	77%
2015	78%	44%	75%
2013	84%	57%	83%
2012	79%	58%	84%
2011	76%	56%	82%
2010	73%	54%	78%

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70-74%

29%

Student : Teacher Ratio

24:1

21:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	25:1	22:1	24:1
2022	25:1	21:1	24:1
2021	25:1	22:1	23:1
2020	25:1	23:1	24:1
2019	25:1	23:1	24:1
2018	25:1	23:1	24:1
2017	25:1	23:1	24:1
2016	25:1	24:1	24:1
2015	24:1	24:1	24:1
2014	24:1	24:1	24:1
2013	23:1	24:1	24:1
2012	22:1	23:1	24:1
2010	21:1	21:1	22:1
2009	19:1	20:1	21:1
2008	19:1	18:1	19:1
2007	21:1	21:1	22:1
2006	21:1	20:1	21:1
2005	21:1	21:1	21:1
2004	20:1	21:1	21:1
2003	22:1	20:1	21:1
2002	20:1	20:1	21:1
2001	21:1	20:1	21:1
2000	20:1	21:1	21:1
1999	18:1	21:1	20:1
1998	19:1	21:1	20:1
1997	21:1	23:1	23:1
1996	23:1	25:1	23:1
1995	23:1	25:1	22:1
1994	23:1	25:1	23:1
1993	19:1	25:1	22:1
1992	24:1	24:1	23:1
1991	24:1	24:1	22:1
1990	19:1	24:1	22:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1994-2008)
Year	Oster Elementary School	California	Union Elementary School District
2008	1%	1%
2002	2%	2%	1%
2001	1%	2%	2%
2000	1%	1%	1%
1996	1%	1%	1%
1994	1%	1%	1%

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Asian

49%

12%

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	51%	12%	38%
2022	51%	12%	37%
2021	49%	12%	34%
2020	41%	12%	30%
2019	41%	12%	30%
2018	34%	11%	24%
2017	34%	11%	24%
2016	28%	11%	22%
2015	16%	11%	19%
2014	18%	11%	19%
2013	22%	11%	19%
2012	20%	11%	17%
2011	20%	11%	16%
2010	22%	11%	16%
2009	17%	11%	16%
2008	17%	12%	15%
2007	16%	12%	15%
2006	16%	12%	14%
2005	12%	12%	13%
2004	12%	12%	12%
2003	12%	11%	12%
2002	11%	11%	11%
2001	8%	11%	10%
2000	6%	11%	10%
1999	8%	11%	10%
1998	9%	11%	10%
1997	5%	11%	9%
1996	6%	11%	9%
1995	7%	11%	8%
1994	8%	11%	8%
1993	8%	11%	7%
1992	8%	11%	8%
1991	9%	11%	8%

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Hispanic

18%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	16%	55%	16%
2022	16%	56%	15%
2021	15%	56%	16%
2020	16%	55%	16%
2019	16%	55%	16%
2018	16%	54%	16%
2017	16%	54%	16%
2016	17%	54%	16%
2015	15%	54%	16%
2014	18%	53%	17%
2013	20%	53%	18%
2012	22%	52%	19%
2011	24%	51%	19%
2010	23%	50%	18%
2009	26%	49%	18%
2008	26%	50%	18%
2007	26%	49%	17%
2006	24%	48%	16%
2005	22%	47%	15%
2004	18%	46%	14%
2003	16%	45%	13%
2002	10%	44%	12%
2001	10%	43%	12%
2000	10%	42%	11%
1999	14%	41%	12%
1998	14%	40%	11%
1997	15%	40%	11%
1996	11%	39%	10%
1995	13%	38%	10%
1994	14%	37%	9%
1993	15%	36%	9%
1992	17%	35%	8%
1991	20%	34%	9%

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Black

View Data

Black Student Percentage Comparison Over Years (1991-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	1%	5%	1%
2022	1%	5%	1%
2021	1%	5%	1%
2020	2%	5%	1%
2019	2%	5%	1%
2018	1%	6%	1%
2017	1%	6%	1%
2016	2%	6%	1%
2015	1%	6%	1%
2014	3%	6%	1%
2013	3%	6%	1%
2012	3%	6%	2%
2011	5%	7%	2%
2010	4%	7%	2%
2009	5%	7%	2%
2008	6%	8%	3%
2007	6%	8%	3%
2006	6%	8%	3%
2005	4%	8%	3%
2004	5%	8%	3%
2003	3%	8%	3%
2002	3%	8%	3%
2001	4%	8%	2%
2000	3%	9%	3%
1999	5%	9%	3%
1998	6%	9%	3%
1997	6%	9%	3%
1996	4%	9%	3%
1995	2%	9%	2%
1994	3%	9%	2%
1993	2%	9%	2%
1992	1%	9%	2%
1991	2%	9%	3%

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White

24%

20%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	25%	21%	37%
2022	25%	21%	39%
2021	27%	22%	40%
2020	30%	23%	44%
2019	30%	23%	44%
2018	37%	24%	50%
2017	37%	24%	50%
2016	41%	24%	52%
2015	39%	24%	53%
2014	40%	25%	52%
2013	45%	25%	54%
2012	46%	26%	56%
2011	45%	27%	57%
2010	45%	27%	59%
2009	47%	28%	61%
2008	50%	29%	64%
2007	52%	29%	65%
2006	54%	31%	67%
2005	62%	31%	68%
2004	65%	32%	70%
2003	69%	34%	71%
2002	74%	35%	73%
2001	77%	36%	74%
2000	80%	37%	75%
1999	73%	38%	74%
1998	71%	39%	75%
1997	74%	39%	76%
1996	78%	40%	77%
1995	78%	41%	79%
1994	74%	42%	80%
1993	75%	43%	81%
1992	74%	44%	82%
1991	69%	45%	80%

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Hawaiian

n/a

View Data

Native Hawaiian or Pacific Islander Student Percentage Comparison Over Years (2009-2013)
Year	Oster Elementary School	California	Union Elementary School District
2013	1%	1%
2012	2%	1%
2011	1%	1%	1%
2010	2%	1%	1%
2009	2%	1%

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Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2009-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	7%	6%	8%
2022	7%	5%	8%
2021	8%	5%	9%
2020	11%	4%	9%
2019	11%	4%	9%
2018	12%	4%	9%
2017	12%	4%	9%
2016	12%	4%	9%
2015	29%	3%	11%
2014	21%	3%	11%
2013	9%	3%	8%
2012	7%	3%	6%
2011	5%	2%	5%
2010	4%	3%	4%
2009	3%	3%	3%

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All Ethnic Groups

0.67

0.63

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	0.65	0.64	0.70
2022	0.65	0.63	0.70
2021	0.66	0.62	0.70
2020	0.71	0.63	0.70
2019	0.71	0.63	0.70
2018	0.71	0.64	0.67
2017	0.71	0.64	0.67
2016	0.72	0.64	0.65
2015	0.72	0.64	0.65
2014	0.74	0.65	0.66
2013	0.71	0.65	0.64
2012	0.70	0.65	0.63
2011	0.71	0.67	0.61
2010	0.70	0.67	0.60
2009	0.69	0.71	0.57
2008	0.66	0.65	0.54
2007	0.65	0.67	0.53
2006	0.63	0.66	0.52
2005	0.56	0.67	0.50
2004	0.54	0.67	0.48
2003	0.51	0.67	0.46
2002	0.44	0.67	0.44
2001	0.39	0.67	0.43
2000	0.35	0.67	0.42
1999	0.45	0.67	0.43
1998	0.47	0.67	0.41
1997	0.43	0.67	0.39
1996	0.38	0.67	0.39
1995	0.37	0.67	0.35
1994	0.43	0.67	0.35
1993	0.41	0.67	0.33
1992	0.42	0.67	0.32
1991	0.48	0.67	0.34

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Eligible for

54%

View Data

Free Lunch Eligibility Comparison Over Years (1992-2023)
Year	Oster Elementary School	California	Union Elementary School District
2023	9%	51%	9%
2022	6%	51%	8%
2021	8%	53%	8%
2020	9%	52%	9%
2019	9%	52%	9%
2018	8%	49%	8%
2017	8%	49%	8%
2016	8%	50%	8%
2015	11%	50%	8%
2014	16%	49%	10%
2013	14%	48%	10%
2011	22%	46%	12%
2010	21%	46%	11%
2009	15%	43%	10%
2008	22%	41%	11%
2007	12%	40%	9%
2006	23%	40%	10%
2005	16%	40%	9%
2004	23%	40%	10%
2003	21%	39%	10%
2002	18%	39%	7%
2001	18%	39%	8%
2000	14%	40%	10%
1999	16%	40%	9%
1998	25%	47%	13%
1997	22%	47%	17%
1996	20%	46%	18%
1995	19%	45%	16%
1994	18%	43%	12%
1993	18%	41%	14%
1992	15%	38%	11%

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Eligible for (21-22)

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2022)
Year	Oster Elementary School	California	Union Elementary School District
2022	1%	7%	1%
2021	1%	6%	1%
2020	1%	7%	1%
2019	1%	7%	1%
2018	2%	9%	1%
2017	2%	9%	1%
2016	3%	9%	2%
2015	2%	9%	2%
2014	2%	9%	2%
2013	3%	7%	3%
2011	6%	8%	3%
2010	6%	9%	4%
2009	6%	10%	4%
2008	9%	10%	4%
2007	5%	10%	3%
2006	6%	9%	4%
2005	5%	9%	3%
2004	5%	9%	3%
2003	9%	9%	4%
2002	9%	8%	3%
2001	7%	8%	3%

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School Statewide Testing

View Education Department Test Scores

School District Name

Union Elementary School District

Source: National Center for Education Statistics (NCES), CA Dept. of Education

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Oster Elementary School's ranking?

Oster Elementary School is ranked #306 out of 9,602 schools, which ranks it among the top 5% of public schools in California.

What schools are Oster Elementary School often compared to?

Oster Elementary Schoolis often viewed alongside schools like Carlton Elementary School, Noddin Elementary School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

79% of students have achieved math proficiency (compared to the 33% CA state average), while 81% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend Oster Elementary School?

627 students attend Oster Elementary School.

What is the racial composition of the student body?

49% of Oster Elementary School students are Asian, 24% of students are White, 18% of students are Hispanic, 8% of students are Two or more races, and 1% of students are Black.

What is the student:teacher ratio of Oster Elementary School?

Oster Elementary School has a student ration of 24:1, which is higher than the California state average of 21:1.

What grades does Oster Elementary School offer ?

Oster Elementary School offers enrollment in grades Kindergarten-5

What school district is Oster Elementary School part of?

Oster Elementary School is part of Union Elementary School District.

In what neighborhood is Oster Elementary School located?

Oster Elementary School is located in the Oster neighborhood of San Jose, CA.

School Reviews

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Quick Stats (2025)

Grades: Kindergarten-5
Enrollment: 627 students
Student:Teacher Ratio: 24:1
Minority Enrollment: 76%
: Top 5%
: 79% (Top 5%)
: 81% (Top 5%)
: 70-74% (Top 5%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education