Is Oster Elementary a good school?

Yes! Oster Elementary is one of the best elementary schools in the state. It ranks 221 st of 5862 California elementary schools.

How many students attend Oster Elementary?

In the 2022-23 school year, 638 students attended Oster Elementary.

What is the racial makeup of Oster Elementary?

Students at Oster Elementary are 51% Asian, 25% White, 16% Hispanic, 7% Two or more races, 1% African American.

What schools do graduates of Oster Elementary attend?

Students who attend Oster Elementary usually go on to attend: Middle : Dartmouth Middle

Oster Elementary

Summary:

Oster Elementary is a high-performing public elementary school in San Jose, California, serving 638 students in grades K-5. It is part of the Union Elementary District, which is ranked 87 out of 1,568 districts in the state and has a 5-star rating from SchoolDigger.

Oster Elementary consistently outperforms the district and state averages in academic assessments, with proficiency rates of 79.55% in English Language Arts/Literacy and 80.25% in Mathematics, compared to the district's 73.94% and 74.53%, and the state's 47.04% and 35.54%. The school also excels in Science, with a 69.9% proficiency rate in 5th grade, surpassing the district's 59.04% and the state's 32.68%. Oster's performance is particularly strong for Asian students and English Language Learners, ranking in the top 105 and 63 schools in the state, respectively.

While Oster Elementary's overall performance is exceptional, the school could potentially improve the academic outcomes of Hispanic, White, and low-socioeconomic status students, as well as students with disabilities, whose proficiency rates lag behind the school's top-performing subgroups. Nonetheless, Oster's consistent 5-star rating from SchoolDigger and its ability to outshine nearby schools, such as Carlton Elementary and Alta Vista Elementary, make it a standout institution within the Union Elementary District. The school's success can serve as a model for other schools in the region, and its continued focus on equity and excellence will likely ensure its continued success in the years to come.

Detail:

Public K-5

1855 Lencar Way
San Jose, CA 95124-3603

(408) 266-8121

District: Union Elementary

SchoolDigger Rank:
221^st of 5,862 California Elementary Schools

Per Pupil Expenditures: $6,948

Students who attend Oster Elementary usually attend:

Middle:

Dartmouth Middle

Student/teacher ratio: 24.5

Number of students: 638

Racial breakdown:

Asian:

51.1%

White:

24.9%

Hispanic:

16.1%

Free/discounted lunch recipients: 8.9%

See top rated California elementary schools

Compare Oster Elementary to nearby elementary schools!

Performance Trends

Compare Details Oster Elementary ranks better than 96.2% of elementary schools in California. It also ranks first among 6 ranked elementary schools in the Union Elementary School District! (See more...)

Compare Details In 2024 the calculated Average Standard Score was 96.44. (See more...)

Chronic absenteeism in a school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.

Student Body

Compare Details Student population at Oster Elementary is diverse. Racial makeup is: Asian (51.1%), White (24.9%), Hispanic (16.1%). (See more...)

Compare Details 8.9% of students are receiving a free or discounted lunch. (See more...)

Compare Details (See more...)

Teachers

Compare Details The student/teacher ratio at Oster Elementary is 24.5, which is the 3^rd best among 6 elementary schools in the Union Elementary School District. (See more...)

Compare Oster Elementary employs 26 full-time teachers.

Finance

Compare Details The average total spent per student at Oster Elementary is $6,948. 4 elementary schools in the Union Elementary School District spend more per student.

Schooldigger 2024 Rankings:

Oster Elementary:

SchoolDigger ranks Oster Elementary 221^st of 5862 California public elementary schools. (See Oster Elementary in the ranking list.)

Elementary School Test Score Ratings by Student Subgroup:

Multi-racial students:

English Language Learner students:

Special Education students:

Low Socio Economic Status students:

Female students:

Male students:

Asian students:

Hispanic students:

White students:

Union Elementary:

SchoolDigger ranks Union Elementary 87^th of 1568 California school districts. (See district ranking list.)

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Rank History for Oster Elementary

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Rank History for all students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2004	87.46	610^th	4809	87.3%
2005	84.30	760^th	4822	84.2%
2006	79.72	978^th	4818	79.7%
2007	78.42	1038^th	5113	79.7%
2008	89.51	513^th	5113	90.0%
2009	86.02	708^th	5193	86.4%
2010	80.92	963^rd	5314	81.9%
2011	82.73	860^th	5377	84.0%
2012	87.06	616^th	5390	88.6%
2013	91.26	381^st	5530	93.1%
2015	95.69	278^th	5611	95.0%
2016	96.12	222^nd	5614	96.0%
2017	97.11	166^th	5692	97.1%
2018	95.45	250^th	5662	95.6%
2019	94.43	339^th	5789	94.1%
2022	96.43	251^st	5883	95.7%
2023	96.26	250^th	5874	95.7%
2024	96.44	221^st	5862	96.2%

See the entire list of California Elementary School Rankings!

Rank History for Multi-racial students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile	SchoolDigger Rating
2019	79.16	71^st	445	84.0%
2024	73.86	182^nd	669	72.8%

See the entire list of Best California Elementary Schools for Multi-racial Students!

Rank History for English Language Learner students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2019	86.80	218^th	3275	93.3%
2022	92.42	140^th	3311	95.8%
2023	95.93	69^th	3250	97.9%
2024	94.70	63^rd	3160	98.0%

See the entire list of Best California Elementary Schools for English Language Learner Students!

Rank History for Special Education students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile	SchoolDigger Rating
2023	92.24	142^nd	2420	94.1%
2024	83.91	280^th	2634	89.4%

See the entire list of Best California Elementary Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	76.79	827^th	5084	83.7%
2019	57.38	1931^st	5173	62.7%
2023	57.24	1924^th	5374	64.2%
2024	93.62	292^nd	5511	94.7%

See the entire list of Best California Elementary Schools for Low Socio Economic Status Students!

Rank History for Female students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	92.48	405^th	5413	92.5%
2019	90.57	527^th	5492	90.4%
2022	96.15	217^th	5635	96.1%
2023	95.40	252^nd	5617	95.5%
2024	95.46	256^th	5605	95.4%

See the entire list of Best California Elementary Schools for Female Students!

Rank History for Disabled students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile	SchoolDigger Rating
2018	86.65	193^rd	2128	90.9%
2019	87.89	212^th	2585	91.8%

See the entire list of Best California Elementary Schools for Disabled Students!

Rank History for Male students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	96.46	154^th	5431	97.2%
2019	95.55	203^rd	5510	96.3%
2022	95.00	303^rd	5663	94.6%
2023	95.61	251^st	5650	95.6%
2024	95.85	205^th	5636	96.4%

See the entire list of Best California Elementary Schools for Male Students!

Rank History for Asian students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	80.17	129^th	1071	88.0%
2019	81.74	95^th	1149	91.7%
2022	81.10	121^st	1154	89.5%
2023	83.01	84^th	1190	92.9%
2024	82.50	105^th	1203	91.3%

See the entire list of Best California Elementary Schools for Asian Students!

Rank History for Hispanic students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	77.17	799^th	4830	83.5%
2019	72.67	1031^st	4963	79.2%
2022	76.26	887^th	5084	82.6%
2023	77.01	877^th	5098	82.8%
2024	87.58	448^th	5102	91.2%

See the entire list of Best California Elementary Schools for Hispanic Students!

Rank History for White students at Oster Elementary

Year	Avg Standard Score	Statewide Rank	Total # Ranked Elementary Schools	CA State Percentile
2018	88.63	132^nd	2737	95.2%
2019	80.61	450^th	2834	84.1%
2022	80.58	427^th	2726	84.3%
2023	77.48	522^nd	2662	80.4%
2024	78.73	472^nd	2647	82.2%

See the entire list of Best California Elementary Schools for White Students!

Data source: test scores: California Department of Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

Data source: California Department of Education

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Enrollment information for Oster Elementary

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Year	White	African American	Asian	Hispanic	American Indian	Pacific Islander	Two or More Races	Not Specified	Total
1988	292	13	30	40	0	n/a	n/a	0	375
1989	282	5	33	70	0	n/a	n/a	0	390
1990	300	8	38	54	0	n/a	n/a	0	400
1991	279	7	35	79	0	n/a	n/a	0	400
1992	305	6	31	69	0	n/a	n/a	0	411
1993	318	8	33	66	1	n/a	n/a	0	426
1994	291	10	32	55	3	n/a	n/a	0	391
1995	308	16	23	44	4	n/a	n/a	0	395
1996	308	16	23	44	4	n/a	n/a	0	395
1997	304	26	21	60	1	n/a	n/a	0	412
1998	273	25	33	54	0	n/a	n/a	0	385
1999	277	16	28	50	1	n/a	n/a	7	379
2000	288	12	22	37	2	n/a	n/a	0	361
2001	262	13	27	35	2	n/a	n/a	0	339
2002	197	7	30	42	1	n/a	n/a	12	289
2003	197	7	30	42	1	n/a	n/a	12	289
2004	193	13	32	50	0	n/a	n/a	10	298
2005	285	20	52	96	1	n/a	n/a	5	459
2006	248	26	72	108	1	n/a	n/a	3	458
2007	232	26	68	113	1	n/a	n/a	4	444
2008	217	26	73	114	3	n/a	n/a	0	433
2009	209	23	78	115	1	7	13	0	446
2010	212	17	102	109	2	11	21	0	474
2011	220	25	95	116	1	7	27	0	491
2012	230	17	100	110	2	8	34	0	501
2013	241	15	112	107	2	7	47	0	531
2014	213	14	96	95	2	2	113	0	535
2015	200	8	85	83	2	0	148	0	526
2016	222	14	154	92	2	0	69	0	553
2017	211	8	196	94	2	0	70	0	581
2018	199	5	228	114	1	0	82	0	629
2019	199	9	269	107	1	0	72	0	657
2020	185	8	275	103	0	0	58	0	629
2021	171	6	305	96	0	0	48	0	626
2022	160	5	322	100	0	0	42	0	629
2023	159	8	326	103	0	0	42	0	638

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Oster Elementary

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1988	375	21.5	17.4	n/a
1989	390	20.0	19.5	n/a
1990	400	21.0	19.0	n/a
1991	400	17.0	23.5	n/a
1992	411	17.3	23.7	14.8
1993	426	23.0	18.5	18.3
1994	391	17.0	23.0	17.9
1995	395	17.5	22.6	20.3
1996	395	17.5	22.6	20.3
1997	412	20.0	20.6	21.6
1998	385	20.0	19.3	24.9
1999	379	21.0	18.0	23.9
2000	361	18.0	20.1	19.7
2001	339	16.6	20.4	25.1
2002	289	13.0	22.2	31.8
2003	289	13.0	22.2	31.8
2004	298	15.0	19.9	29.9
2005	459	22.0	20.9	21.4
2006	458	22.5	20.4	29.5
2007	444	21.5	20.7	16.6
2008	433	22.9	18.9	30.5
2009	446	23.2	17.9	21.5
2010	474	22.4	21.0	27.6
2011	491	n/a	n/a	27.3
2012	501	22.9	21.8	n/a
2013	531	23.4	22.6	17.3
2014	535	22.0	24.3	18.1
2015	526	22.0	23.9	14.1
2016	553	22.0	25.1	12.1
2017	581	22.5	25.8	10.3
2018	629	24.5	25.6	11.6
2019	657	26.0	25.2	10.2
2020	629	n/a	n/a	10.5
2021	626	25.0	25.0	9.6
2022	629	25.1	25.0	6.7
2023	638	26.0	24.5	8.9

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio Oster Elementary

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1988	375	21.5	17.4	n/a
1989	390	20.0	19.5	n/a
1990	400	21.0	19.0	n/a
1991	400	17.0	23.5	n/a
1992	411	17.3	23.7	14.8
1993	426	23.0	18.5	18.3
1994	391	17.0	23.0	17.9
1995	395	17.5	22.6	20.3
1996	395	17.5	22.6	20.3
1997	412	20.0	20.6	21.6
1998	385	20.0	19.3	24.9
1999	379	21.0	18.0	23.9
2000	361	18.0	20.1	19.7
2001	339	16.6	20.4	25.1
2002	289	13.0	22.2	31.8
2003	289	13.0	22.2	31.8
2004	298	15.0	19.9	29.9
2005	459	22.0	20.9	21.4
2006	458	22.5	20.4	29.5
2007	444	21.5	20.7	16.6
2008	433	22.9	18.9	30.5
2009	446	23.2	17.9	21.5
2010	474	22.4	21.0	27.6
2011	491	n/a	n/a	27.3
2012	501	22.9	21.8	n/a
2013	531	23.4	22.6	17.3
2014	535	22.0	24.3	18.1
2015	526	22.0	23.9	14.1
2016	553	22.0	25.1	12.1
2017	581	22.5	25.8	10.3
2018	629	24.5	25.6	11.6
2019	657	26.0	25.2	10.2
2020	629	n/a	n/a	10.5
2021	626	25.0	25.0	9.6
2022	629	25.1	25.0	6.7
2023	638	26.0	24.5	8.9

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.

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