Costano Elementary School (Ranked Bottom 50% for 2026)

2695 Fordham St.
Palo Alto, CA 94303

( shown in map)

Bottom 50%

Serving 318 students in grades Kindergarten-5, Costano Elementary School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).

The percentage of students achieving is ≤5% (which is lower than the California state average of 34%). The percentage of students achieving is 15% (which is lower than the California state average of 47%).

The student-teacher ratio of 18:1 is lower than the California state level of 21:1.

Minority enrollment is 98% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).

Quick Facts (2026)

Grades: Kindergarten-5
Enrollment: 318 students
Student-Teacher Ratio: 18:1
Minority Enrollment: 98%
: Bottom 50% in CA
: ≤5% (Btm 50%)
: 15% (Btm 50%)
: ≤5% (Btm 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

<�鶹��ý class='so-dt-title' id="overview">School Overview

Costano Elementary School's student population of 318 students has declined by 33% over five school years.

The teacher population of 18 teachers has declined by 25% over five school years.

Grades Offered

Grades Kindergarten-5

View Data

Distribution of Students By Grade Trends
Grade	Costano Elementary School
Kind	59
1	51
2	51
3	49
4	46
5	62

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Total Students

318 students

View Data

Total Students Trends Over Years (1988-2024)
Year	Costano Elementary School
2024	318
2023	348
2022	400
2021	475
2020	358
2019	358
2018	509
2017	509
2016	558
2015	564
2014	591
2013	590
2012	587
2011	504
2010	376
2009	339
2008	369
2007	371
2006	463
2005	468
2004	524
2003	524
2002	548
2001	547
2000	553
1999	553
1998	542
1997	594
1996	543
1995	526
1994	513
1993	483
1992	480
1991	550
1990	483
1989	405
1988	396

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Gender %

Total Classroom Teachers

18 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2024)
Year	Costano Elementary School
2024	18
2023	19
2022	23
2021	24
2020	16
2019	16
2018	24
2017	24
2016	25
2015	25
2014	26
2013	31
2012	34
2010	25
2009	18
2008	22
2007	20
2006	22
2005	23
2004	26
2003	30
2002	32
2001	28
2000	30
1999	30
1998	30
1997	25
1996	25
1995	24
1994	24
1993	21
1992	19
1991	19
1990	19
1989	19
1988	15
1987	18

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Year Founded

1995

School Calendar

<�鶹��ý class='so-dt-title' id="school-rankings">School Rankings

Costano Elementary School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).

The of Costano Elementary School is 0.45, which is less 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)

#9334 out of 9523 schools
(Bottom 50%)

View Data

Overall School Rank Trends Over Years (2011-2023)
Year	Costano Elementary School
2023	#9334
2022	#9496
2019	#8673
2018	#8652
2017	#9176
2016	#9104
2015	#7825
2014	#1043
2013	#5901
2012	#5901
2011	#6915

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≤5%

34%

View Data

Math Proficiency Comparison Over Years (2011-2023)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2023	5%	34%	6%
2022	3%	33%	6%
2019	17%	40%	12%
2018	12%	39%	15%
2017	7%	38%	17%
2016	8%	37%	12%
2015	12%	34%	12%
2014	50%	63%	80%
2013	54%	59%	43%
2012	56%	59%	47%
2011	50%	58%	49%

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15%

47%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2022	15%	47%	13%
2019	22%	51%	18%
2018	26%	50%	15%
2017	18%	48%	24%
2016	18%	48%	19%
2015	18%	44%	18%
2014	50%	58%	80%
2013	44%	57%	33%
2012	45%	58%	38%
2011	41%	56%	37%
2010	31%	54%	34%

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≤5%

29%

Student-Teacher Ratio

18:1

21:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	18:1	21:1
2023	18:1	22:1	21:1
2022	17:1	22:1	20:1
2021	20:1	22:1	21:1
2020	22:1	23:1	25:1
2019	22:1	23:1	25:1
2018	21:1	23:1	23:1
2017	21:1	23:1	23:1
2016	22:1	24:1	24:1
2015	23:1	24:1	25:1
2014	23:1	24:1	24:1
2013	19:1	24:1	23:1
2012	18:1	24:1	20:1
2010	15:1	22:1	17:1
2009	19:1	21:1	18:1
2008	17:1	18:1	19:1
2007	19:1	22:1	19:1
2006	21:1	22:1	19:1
2005	20:1	22:1	20:1
2004	20:1	22:1	20:1
2003	17:1	21:1	19:1
2002	17:1	21:1	18:1
2001	20:1	21:1	19:1
2000	18:1	22:1	19:1
1999	18:1	22:1	19:1
1998	18:1	22:1	22:1
1997	24:1	24:1	24:1
1996	22:1	25:1	25:1
1995	22:1	25:1	24:1
1994	21:1	25:1	24:1
1993	23:1	25:1	25:1
1992	25:1	24:1	25:1
1991	29:1	24:1	24:1
1990	25:1	24:1	23:1
1989	21:1	24:1	23:1
1988	26:1	24:1	24:1
1987	23:1	24:1	27:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1988-2014)
Year	Costano Elementary School	California
2014	1%	1%
2011	1%	1%
2010	1%	1%
2009	1%	1%
1989	1%	1%
1988	1%	1%

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Asian

n/a

12%

View Data

Asian Student Percentage Comparison Over Years (1989-2023)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2023	1%	12%	2%
2022	1%	12%	2%
2021	1%	12%	2%
2020	1%	12%	3%
2019	1%	12%	3%
2018	1%	11%
2017	1%	11%
2014	1%	11%	1%
2013	1%	11%	1%
2012	1%	11%	1%
2009	1%	11%	1%
2008	18%	12%	10%
2007	23%	12%	10%
2006	26%	12%	11%
2005	24%	12%	11%
2004	26%	12%	11%
2003	24%	11%	11%
2002	25%	11%	11%
2001	21%	11%	10%
2000	22%	11%	11%
1999	23%	11%	11%
1998	20%	11%	11%
1997	22%	11%	12%
1996	20%	11%	11%
1995	21%	11%	11%
1994	22%	11%	12%
1993	18%	11%	11%
1992	23%	11%	11%
1991	19%	11%	11%
1990	23%	10%	11%
1989	19%	10%	10%

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Hispanic

72%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1988-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	72%	56%
2023	68%	55%	75%
2022	75%	56%	75%
2021	74%	56%	75%
2020	67%	55%	76%
2019	67%	55%	76%
2018	69%	54%	71%
2017	69%	54%	71%
2016	68%	54%	81%
2015	69%	54%	66%
2014	68%	53%	82%
2013	67%	53%	81%
2012	64%	52%	79%
2011	67%	51%	79%
2010	65%	50%	79%
2009	65%	49%	78%
2008	66%	50%	77%
2007	60%	49%	74%
2006	57%	48%	73%
2005	53%	47%	71%
2004	47%	46%	71%
2003	49%	45%	69%
2002	48%	44%	68%
2001	50%	43%	67%
2000	50%	42%	64%
1999	49%	41%	65%
1998	47%	40%	62%
1997	46%	40%	60%
1996	46%	39%	60%
1995	48%	38%	59%
1994	46%	37%	55%
1993	51%	36%	52%
1992	46%	35%	51%
1991	50%	34%	46%
1990	47%	33%	40%
1989	33%	31%	34%
1988	35%	30%	32%

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Black

View Data

Black Student Percentage Comparison Over Years (1988-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	7%	5%
2023	9%	5%	12%
2022	7%	5%	12%
2021	6%	5%	11%
2020	8%	5%	10%
2019	8%	5%	10%
2018	9%	6%	10%
2017	9%	6%	10%
2016	12%	6%	10%
2015	14%	6%	10%
2014	13%	6%	7%
2013	14%	6%	8%
2012	15%	6%	9%
2011	15%	7%	11%
2010	3%	7%	5%
2009	19%	7%	12%
2008	16%	8%	13%
2007	16%	8%	15%
2006	17%	8%	16%
2005	23%	8%	18%
2004	27%	8%	18%
2003	26%	8%	19%
2002	27%	8%	21%
2001	28%	8%	23%
2000	28%	9%	24%
1999	28%	9%	24%
1998	32%	9%	26%
1997	31%	9%	27%
1996	34%	9%	28%
1995	30%	9%	29%
1994	31%	9%	32%
1993	30%	9%	36%
1992	31%	9%	38%
1991	30%	9%	43%
1990	30%	9%	49%
1989	45%	9%	55%
1988	49%	9%	58%

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White

20%

View Data

White Student Percentage Comparison Over Years (1991-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	2%	20%
2023	3%	21%	1%
2022	1%	21%	1%
2021	2%	22%	1%
2020	3%	23%	1%
2019	3%	23%	1%
2018	1%	24%
2017	1%	24%
2014	1%	25%	1%
2013	1%	25%	1%
2007	1%	29%	1%
2003	1%	34%	1%
2001	1%	36%
1998	1%	39%	1%
1997	1%	39%	1%
1995	1%	41%	1%
1994	1%	42%	1%
1993	1%	43%	1%
1991	1%	45%

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Hawaiian

16%

n/a

View Data

Native Hawaiian or Pacific Islander Student Percentage Comparison Over Years (2009-2015)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2015	15%	1%	8%
2014	15%	1%	8%
2013	17%	1%	8%
2012	18%	1%	9%
2011	16%	1%	8%
2010	1%	1%	3%
2009	14%	1%	8%

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Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2011-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	3%	6%
2023	2%	6%	2%
2022	1%	5%	2%
2021	2%	5%	2%
2020	1%	4%	1%
2019	1%	4%	1%
2016	2%	4%	1%
2015	2%	3%	3%
2014	1%	3%	1%
2012	1%	3%	1%
2011	1%	2%	1%

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All Ethnic Groups

0.45

0.63

View Data

Diversity Score Comparison Over Years (1988-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	0.45	0.63
2023	0.50	0.64	0.42
2022	0.41	0.63	0.42
2021	0.43	0.62	0.42
2020	0.51	0.63	0.40
2019	0.51	0.63	0.40
2018	0.48	0.64	0.37
2017	0.48	0.64	0.37
2016	0.50	0.64	0.33
2015	0.49	0.64	0.37
2014	0.50	0.65	0.31
2013	0.52	0.65	0.33
2012	0.54	0.65	0.36
2011	0.51	0.67	0.36
2010	0.49	0.67	0.37
2009	0.54	0.71	0.38
2008	0.51	0.65	0.39
2007	0.57	0.67	0.42
2006	0.59	0.66	0.44
2005	0.61	0.67	0.46
2004	0.65	0.67	0.46
2003	0.66	0.67	0.48
2002	0.65	0.67	0.48
2001	0.63	0.67	0.50
2000	0.63	0.67	0.52
1999	0.64	0.67	0.52
1998	0.65	0.67	0.54
1997	0.65	0.67	0.56
1996	0.64	0.67	0.56
1995	0.65	0.67	0.56
1994	0.66	0.67	0.59
1993	0.62	0.67	0.60
1992	0.65	0.67	0.59
1991	0.63	0.67	0.60
1990	0.65	0.66	0.60
1989	0.66	0.65	0.58
1988	0.62	0.65	0.55

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Eligible for

85%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1994-2024)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2024	85%	54%
2023	82%	51%	79%
2022	75%	51%	75%
2021	87%	53%	82%
2020	89%	52%	80%
2019	89%	52%	80%
2018	81%	49%	78%
2017	81%	49%	78%
2016	85%	50%	80%
2015	86%	50%	85%
2014	85%	49%	86%
2013	85%	48%	87%
2012	99%	9%	33%
2011	88%	46%	85%
2010	84%	46%	84%
2009	77%	43%	74%
2008	73%	41%	69%
2007	86%	40%	64%
2006	78%	40%	70%
2005	72%	40%	70%
2004	71%	40%	68%
2003	69%	39%	56%
2002	61%	39%	49%
2001	53%	39%	57%
2000	71%	40%	71%
1999	71%	40%	71%
1998	85%	47%	89%
1997	87%	47%	89%
1996	76%	46%	78%
1995	72%	45%	81%
1994	86%	43%	85%

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Eligible for (20-21)

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2000-2021)
Year	Costano Elementary School	California	Ravenswood City Elementary School District
2021	3%	6%	4%
2020	4%	7%	4%
2019	4%	7%	4%
2018	7%	9%	8%
2017	7%	9%	8%
2016	5%	9%	6%
2015	5%	9%	5%
2014	7%	9%	8%
2013	7%	7%	6%
2011	4%	8%	4%
2010	8%	9%	8%
2009	1%	10%	7%
2008	9%	10%	11%
2007	13%	10%	13%
2006	10%	9%	14%
2005	15%	9%	16%
2004	15%	9%	16%
2003	15%	9%	13%
2002	16%	8%	17%
2001	17%	8%	15%
2000	10%	7%	10%

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School Statewide Testing

School District Name

Ravenswood City Elementary School District

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

<�鶹��ý class='so-dt-title' id="school-notes">School Notes

School Mascot: Cougars

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<�鶹��ý class='so-dt-title' id='faq'>Frequently Asked Questions

What is Costano Elementary School's ranking?

Costano Elementary School is ranked #9334 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.

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

≤5% of students have achieved math proficiency (compared to the 34% CA state average), while 15% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend Costano Elementary School?

318 students attend Costano Elementary School.

What is the racial composition of the student body?

72% of Costano Elementary School students are Hispanic, 16% of students are Hawaiian, 7% of students are Black, 3% of students are Two or more races, and 2% of students are White.

What is the student-teacher ratio of Costano Elementary School?

Costano Elementary School has a student ration of 18:1, which is lower than the California state average of 21:1.

What grades does Costano Elementary School offer ?

Costano Elementary School offers enrollment in grades Kindergarten-5

What school district is Costano Elementary School part of?

Costano Elementary School is part of Ravenswood City Elementary School District.

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