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Edward C. Merlo Institute of Environmental Studies

Public Grades 9-12

898^th

SchoolDigger Rank ?

of 2,162 California High Schools

Better than 58% of California high schools

Summary

Edward C. Merlo Institute of Environmental Studies is a small public high school serving about 200 students in grades 9-12 within the Stockton Unified district, and it has shown remarkable improvement in recent years, climbing from a very low state ranking to a solid 3-star rating.

This school truly excels in getting students to graduate, with a perfect 100% graduation rate that far outpaces the district and state, and it has an exceptionally low dropout rate of 0%. Students also perform very strongly in English Language Arts, with proficiency rates more than double the Stockton Unified average. Compared to nearby schools like Jane Frederick High or Stockton High, Merlo Institute's outcomes in graduation and English are dramatically better, even though they serve a student population with similar economic challenges.

The school's main area for growth is mathematics, where proficiency remains very low and is a clear focus for improvement. While it receives more funding per student than other local schools, this investment has clearly paid off in creating a successful turnaround story with high graduation rates. Families interested in a small, themed high school with a strong record of student support and improvement should consider Merlo Institute, while noting that its math program needs strengthening to match its success in other areas.

200

Students ?

14.0

Student/teacher ratio ?

$21,204

Per pupil spending ?

79%

Free/discounted lunch ?

1670 East Sixth St.
Stockton, CA 95206-2352

(209) 933-7190

District: Stockton Unified

Racial breakdown:

Hispanic:

91.5%

African American:

4.5%

Asian:

2.5%

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At a glance

▲ Ranking trend: Improving — 3rd percentile in 2015 → 58th in 2025

Strengths

✓100% graduate in 4 years — above the California average (88%)

✓Ranking is trending up — up 55 percentile points since 2015

✓Above the California median (58th percentile)

Worth a look

!Mathematics scores 26 pts below the California average

Students meeting standards (2024-2025) ?

This school38%

District avg23%

California avg41%

898^th of 2,162

California public high schools ?

Top 42%▲ up 56 pts since 2015

From bottom 3% (2015) to top 42% (2025)

See the entire ranking list of California High Schools →

★★★★★

SchoolDigger rating ?

4^th of 11High Schools in the Stockton Unified

1308^th of 1,543Stockton Unified among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2025	56.5	898 of 2162	58.5%	★★★☆☆
2024	46.7	1083 of 2159	49.8%	★★☆☆☆
2023	17.4	1767 of 2170	18.6%	★☆☆☆☆
2022	30.6	1413 of 2123	33.4%	★★☆☆☆
2021	15.6	1070 of 1290	17.1%	★☆☆☆☆
2019	36.3	1306 of 2133	38.8%	★★☆☆☆
2018	11.7	1724 of 2017	14.5%	★☆☆☆☆
2017	20.8	1496 of 2021	26.0%	★☆☆☆☆
2016	15.7	1599 of 2039	21.6%	★☆☆☆☆
2015	8.6	1944 of 1994	2.5%	☆☆☆☆☆
2013	17.6	1760 of 2426	27.5%	★☆☆☆☆
2012	15.1	1811 of 2354	23.1%	★☆☆☆☆
2011	13.0	1944 of 2367	17.9%	★☆☆☆☆
2010	13.8	1876 of 2281	17.8%	★☆☆☆☆
2009	42.6	941 of 2238	58.0%	★★★☆☆
2008	44.2	815 of 2117	61.5%	★★★☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2023	27.1	928 of 1064	12.8%	★☆☆☆☆
2022	36.2	634 of 1044	39.3%	★★☆☆☆
2019	28.1	857 of 941	8.9%	☆☆☆☆☆
2018	25.4	739 of 938	21.2%	★☆☆☆☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2025	46.4	978 of 1906	48.7%	★★☆☆☆
2024	23.6	1466 of 1915	23.4%	★☆☆☆☆
2023	15.6	1615 of 1915	15.7%	★☆☆☆☆
2022	24.3	1407 of 1858	24.3%	★☆☆☆☆
2021	10.0	966 of 1054	8.3%	☆☆☆☆☆
2019	28.7	1301 of 1833	29.0%	★☆☆☆☆
2018	8.4	1598 of 1760	9.2%	☆☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	66.0	578 of 1900	69.6%	★★★☆☆
2024	57.8	738 of 1902	61.2%	★★★☆☆
2023	18.2	1562 of 1917	18.5%	★☆☆☆☆
2022	35.2	1200 of 1861	35.5%	★★☆☆☆
2019	43.7	1026 of 1814	43.4%	★★☆☆☆
2018	12.4	1459 of 1742	16.2%	★☆☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	62.2	699 of 2013	65.3%	★★★☆☆
2024	52.1	900 of 2026	55.6%	★★★☆☆
2023	18.1	1651 of 2030	18.7%	★☆☆☆☆
2022	38.9	1153 of 1943	40.7%	★★☆☆☆
2021	16.2	935 of 1126	17.0%	★☆☆☆☆
2019	49.5	939 of 1937	51.5%	★★★☆☆
2018	12.8	1559 of 1862	16.3%	★☆☆☆☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2025	59.5	736 of 1942	62.1%	★★★☆☆
2024	62.0	648 of 1948	66.7%	★★★☆☆
2023	17.5	1596 of 1963	18.7%	★☆☆☆☆
2022	33.3	1216 of 1916	36.5%	★★☆☆☆
2021	16.2	941 of 1122	16.1%	★☆☆☆☆
2019	37.6	1127 of 1880	40.1%	★★☆☆☆
2018	12.2	1556 of 1834	15.2%	★☆☆☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Hispanic (2025)70th percentile+11 vs school

Low Socio Economic Status (2025)65th percentile+7 vs school

Male (2025)62nd percentile+4 vs school

Female (2025)49th percentile-10 vs school

English Language Learner (2023)13th percentile-6 vs school

By subject vs California (2024-2025) ?

English Language Arts/Literacy68%+19 vs state

Science35%~ state avg

Mathematics11%-26 vs state

★

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Schools Near Edward C. Merlo Institute of Environmental Studies

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)					Smarter Balanced Assessments English Language Arts/Literacy (2025)					Smarter Balanced Assessments Mathematics (2025)					Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CAST Science 8th Grade	CAST Science 10th Grade	CAST Science 11th Grade	CAST Science 12th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Edward C. Merlo Institute of Environmental Studies	Public	9-12	1670 East Sixth St.	Stockton	95206	San Joaquin County	Stockton Unified	No	(n/a)	No	(n/a)	(209) 933-7190	200	14	14.0	79.0%	2 (1.0%)	9 (4.5%)	183 (91.5%)	5 (2.5%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	56.5	898^th of 2162 public high schools	58.5%		46.7	1083^rd of 2159 public high schools	49.8%	185			35.1		35.1				67.6	67.6				10.8	10.8	$21,204	$3,625	$17,579
Aspire Stockton 6-12 Secondary Academy	Public, Charter	6-12	2428 Belleview Ave.	Stockton	95206	San Joaquin County	Aspire Stockton 6-12 Secondary Academy District	Yes	(n/a)	No	(n/a)	(209) 208-9900	326	13	25.1	89.3%	8 (2.5%)	68 (20.9%)	204 (62.6%)	17 (5.2%)	2 (0.6%)	2 (0.6%)	24 (7.4%)								(n/a)	6.6				6.6	18.5	22.2	31.2		23.4	14.5	17.1	13.1		15.0	$26,647	$1,685	$24,962
Edison High	Public	9-12	100 West Dr. Martin Luther Kin	Stockton	95206	San Joaquin County	Stockton Unified	No	(n/a)	No	(n/a)	(209) 933-7425	2,355	99	23.7	79.7%	24 (1.0%)	249 (10.6%)	1,738 (73.8%)	247 (10.5%)	14 (0.6%)	9 (0.4%)	70 (3.0%)	31.5	1456^th of 2162 public high schools	32.7%		30.9	1469^th of 2159 public high schools	32.0%	13			17.9	16.7	17.9				41.7	41.7				9.6	9.6	$14,618	$3,251	$11,367
Jane Frederick High	Public	9-12	1141 East Weber Ave.	Stockton	95205	San Joaquin County	Stockton Unified	No	(n/a)	No	(n/a)	(209) 933-7340	178	12	14.7	88.8%	5 (2.8%)	28 (15.7%)	128 (71.9%)	6 (3.4%)	2 (1.1%)	0 (0.0%)	9 (5.1%)	9.2	2058^th of 2162 public high schools	4.8%		9.3	2106^th of 2159 public high schools	2.5%	48			0.0	0.0	0.0				5.6	5.6				2.9	2.9	$24,421	$3,414	$21,007
Stockton Collegiate International Secondary	Public, Charter	6-12	400 E. Main St.	Stockton	95202	San Joaquin County	Stockton Collegiate International Secondary District	Yes	(n/a)	No	(n/a)	(209) 390-9861	466	17	26.9	47.2%	40 (8.6%)	27 (5.8%)	303 (65.0%)	56 (12.0%)	0 (0.0%)	1 (0.2%)	39 (8.4%)	75.2	493^rd of 2162 public high schools	77.2%		63.7	681^st of 2159 public high schools	68.5%	188	19.5	36.8			26.9	15.2	31.7	55.8	76.7	40.7	2.6	12.5	14.3	30.2	13.0	$15,409	$622	$14,787
Pride Continuation	Public	10-12	18527 East Main St.	Linden	95236	San Joaquin County	Linden Unified	No	(n/a)	No	(n/a)	(209) 887-3894	27	2	13.5	88.9%	4 (14.8%)	0 (0.0%)	23 (85.2%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)								(n/a)					9.1											$20,383	$2,496	$17,887
Weber Institute	Public	9-12	302 West Weber Ave.	Stockton	95203	San Joaquin County	Stockton Unified	No	(n/a)	No	(n/a)	(209) 933-7330	358	23	15.5	78.5%	9 (2.5%)	5 (1.4%)	314 (87.7%)	23 (6.4%)	1 (0.3%)	2 (0.6%)	3 (0.8%)	46.9	1099^th of 2162 public high schools	49.2%		74.1	501^st of 2159 public high schools	76.8%	598			25.0		25.0				61.1	61.1				11.1	11.1	$19,851	$3,109	$16,742
Stockton High	Public	9-12	22 South Van Buren St.	Stockton	95203	San Joaquin County	Stockton Unified	No	(n/a)	No	(n/a)	(209) 933-7365	191	7	25.5	89.5%	13 (6.8%)	11 (5.8%)	149 (78.0%)	8 (4.2%)	3 (1.6%)	0 (0.0%)	7 (3.7%)	12.7	1889^th of 2162 public high schools	12.6%		11.9	1957^th of 2159 public high schools	9.4%	68			8.7		7.6				17.5	17.5				0.0	0.0	$16,328	$2,858	$13,470
Health Careers Academy	Public, Charter	9-12	931 East Magnolia St.	Stockton	95202	San Joaquin County	Stockton Unified	Yes	(n/a)	No	(n/a)	(209) 933-7360	410	23	17.7	79.0%	15 (3.7%)	20 (4.9%)	317 (77.3%)	49 (12.0%)	2 (0.5%)	0 (0.0%)	6 (1.5%)	73.3	529^th of 2162 public high schools	75.5%		59	797^th of 2159 public high schools	63.1%	268			44.2		44.2				79.1	79.1				23.3	23.3	$20,655	$3,184	$17,471
San Joaquin County Regional Occupational Center Program	Public	10-12	2707 Transworld Dr.	Stockton	95206	San Joaquin County	San Joaquin County Regional Occupational Program	No	(n/a)	(n/a)	(n/a)	(209) 468-9005	0				0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)

Frequently Asked Questions about Edward C. Merlo Institute of Environmental Studies

What district is Edward C. Merlo Institute of Environmental Studies in?

Stockton Unified

What is the racial makeup of Edward C. Merlo Institute of Environmental Studies?

Students at Edward C. Merlo Institute of Environmental Studies are 92% Hispanic, 5% African American, 3% Asian.

Is Edward C. Merlo Institute of Environmental Studies a good school?

Edward C. Merlo Institute of Environmental Studies ranks 898^th of 2162 California high schools. SchoolDigger rates this school 3 stars out of 5.

How many students attend Edward C. Merlo Institute of Environmental Studies?

In the 2024-25 school year, 200 students attended Edward C. Merlo Institute of Environmental Studies.

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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.