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John S. Martinez Sea and Sky STEM School

Public Grades PK, KG-8

428^th

SchoolDigger Rank ?

of 492 Connecticut Elementary Schools

Better than 13% of Connecticut elementary schools

Summary

John S. Martinez Sea and Sky STEM School is a Pre-K through 8th grade school in New Haven, CT, serving 486 students from a high-poverty community, where 83% of students qualify for free or reduced-price lunch. The school has historically ranked in the bottom fifth of Connecticut elementary schools, though it has shown recent improvement, moving from 454th statewide in 2024–2025 to 428th in 2025–2026 (out of 491 schools). Chronic absenteeism, while still above the state average of 16.4%, has been cut nearly in half from 37.7% in 2021–2022 to 20.9% in 2025–2026 — about 10 points better than the New Haven School District average.

The school's "Sea and Sky STEM" identity is more than just a name. Math proficiency consistently beats the district, often by wide margins — for example, 8th grade math reached 44.4% in 2025–2026 versus just 16.4% districtwide, and 3rd grade math has topped the district in consecutive years. 8th grade science is a genuine standout: 52.8% of students scored proficient in 2023–2024, exceeding the Connecticut state average of 48.1%, and roughly double the rates at nearby Fair Haven School, Clinton Avenue School, and Benjamin Jepson Magnet School. These STEM strengths make the school a relative bright spot compared with neighbors like Fair Haven (ranked 490 out of 491 schools) and other low-performing buildings in the district.

The clear weakness is English language arts. ELA proficiency sits in the low 20s across most grades — about 25 to 30 points below the state average in 3rd, 5th, and 7th grades. The contrast with Worthington Hooker School, about 1.4 miles away, is stark: Worthington Hooker posts ELA and math scores of 50–75%, has just 36.4% of students on free/reduced lunch, and a 6.5% chronic absenteeism rate — illustrating how deeply socioeconomic circumstances track with outcomes. That said, John S. Martinez is showing it can produce competitive STEM results despite those challenges, and its improvement in attendance and statewide rank suggests forward momentum. Lifting ELA scores remains the key obstacle to moving out of the bottom quintile.

486

Students ?

17.3

Student/teacher ratio ?

$17,716

Per pupil spending ?

83.1%

Free/reduced lunch eligible (2024-25) ?

100%

Kindergartners with all required vaccines (2025-26)

Exemptions: 0% (any vaccine)

100 James St.
New Haven, CT 06513

(475) 220-2000

District: New Haven School District

Students who attend John S. Martinez Sea and Sky STEM School usually attend:

High:

Wilbur Cross High School

Racial breakdown:

Hispanic:

89.9%

African American:

5.3%

White:

2.1%

See top rated Connecticut elementary schools

Compare John S. Martinez Sea and Sky STEM School to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 9th percentile in 2016 → 13th in 2026

Worth a look

!Test scores below the Connecticut average (25% vs 49% meeting standards)

!In the lower quartile statewide (13th percentile)

!English Language Arts scores 31 pts below the Connecticut average

Students meeting standards (2025-2026) ?

This school25%

District avg22%

Connecticut avg49%

Elementary school

428^th of 492

Connecticut public elementary schools ?

Bottom 13%▲ up 4 pts since 2016

From bottom 9% (2016) to bottom 13% (2026)

See the entire ranking list of Connecticut Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

175^th of 258

Connecticut public middle schools ?

Bottom 32%▲ up 18 pts since 2016

From bottom 14% (2016) to bottom 32% (2026)

See the entire ranking list of Connecticut Middle Schools →

★★★★★

SchoolDigger rating ?

9^th of 20Elementary Schools in the New Haven School District

143^rd of 153New Haven School District among Connecticut districts

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

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	10.8	428 of 492	13.0%	★☆☆☆☆
2025	8.3	454 of 493	7.9%	☆☆☆☆☆
2024	10.8	433 of 497	12.9%	★☆☆☆☆
2023	9.3	438 of 491	10.8%	★☆☆☆☆
2022	11.5	416 of 490	15.1%	★☆☆☆☆
2021	11.9	461 of 538	14.3%	★☆☆☆☆
2019	17.3	430 of 522	17.6%	★☆☆☆☆
2018	9.7	464 of 532	12.8%	★☆☆☆☆
2017	8.3	458 of 519	11.8%	★☆☆☆☆
2016	6.7	472 of 518	8.9%	☆☆☆☆☆
2015	6.3	522 of 551	5.3%	☆☆☆☆☆
2013	7.8	519 of 557	6.8%	☆☆☆☆☆
2012	15.1	494 of 564	12.4%	★☆☆☆☆
2011	5.3	544 of 565	3.7%	☆☆☆☆☆
2010	5.1	557 of 579	3.8%	☆☆☆☆☆
2009	5.5	538 of 566	4.9%	☆☆☆☆☆
2008	10.9	511 of 565	9.6%	☆☆☆☆☆
2007	12.2	512 of 568	9.9%	★☆☆☆☆
2006	12.7	508 of 570	10.9%	★☆☆☆☆

English Language Learner

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2022	59.4	6 of 15	60.0%	★★★★☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2022	5.9	220 of 234	6.0%	☆☆☆☆☆
2019	7.5	229 of 242	5.4%	☆☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	30.2	92 of 130	29.2%	★☆☆☆☆
2025	32.6	89 of 132	32.6%	★★☆☆☆
2023	21.8	93 of 108	13.9%	★☆☆☆☆
2022	33.7	74 of 99	25.3%	★☆☆☆☆
2021	28.3	119 of 173	31.2%	★★☆☆☆
2019	40.7	65 of 112	42.0%	★★☆☆☆
2018	30.4	75 of 101	25.7%	★☆☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	24.4	227 of 302	24.8%	★☆☆☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2022	10.5	213 of 232	8.2%	☆☆☆☆☆
2021	4.7	423 of 445	4.9%	☆☆☆☆☆
2019	15.4	216 of 247	12.6%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	24.0	284 of 371	23.5%	★☆☆☆☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	26.1	175 of 258	32.2%	★★☆☆☆
2025	21.6	177 of 252	29.8%	★★☆☆☆
2024	22.2	176 of 250	29.6%	★☆☆☆☆
2023	19.9	178 of 249	28.5%	★☆☆☆☆
2022	23.7	169 of 250	32.4%	★★☆☆☆
2021	21.2	204 of 275	25.8%	★☆☆☆☆
2019	23.5	185 of 259	28.6%	★☆☆☆☆
2018	14.3	207 of 249	16.9%	★☆☆☆☆
2017	20.9	179 of 250	28.4%	★☆☆☆☆
2016	10.4	212 of 246	13.8%	★☆☆☆☆
2015	14.9	232 of 280	17.1%	★☆☆☆☆
2013	9.6	244 of 278	12.2%	★☆☆☆☆
2012	11.8	238 of 272	12.5%	★☆☆☆☆
2011	12.0	232 of 269	13.8%	★☆☆☆☆
2010	10.4	234 of 268	12.7%	★☆☆☆☆
2009	9.5	226 of 255	11.4%	★☆☆☆☆
2008	6.2	226 of 252	10.3%	★☆☆☆☆
2007	6.3	222 of 250	11.2%	★☆☆☆☆
2006	11.2	211 of 248	14.9%	★☆☆☆☆

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	15.6	193 of 235	17.9%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	43.4	52 of 105	50.5%	★★★☆☆
2024	49.6	41 of 104	60.6%	★★★☆☆
2022	57.4	29 of 97	70.1%	★★★★☆
2021	40.7	86 of 146	41.1%	★★☆☆☆
2019	47.7	41 of 97	57.7%	★★★☆☆
2018	38.9	40 of 75	46.7%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	37.9	128 of 218	41.3%	★★☆☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	25.7	162 of 224	27.7%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2021	41.0	142 of 244	41.8%	★★☆☆☆

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)

Elementary school

English Language Learner (2022)60th percentile+45 vs school

Hispanic (2026)29th percentile+16 vs school

Low Socio Economic Status (2021)25th percentile+11 vs school

Special Education (2021)23rd percentile+9 vs school

Male (2022)8th percentile-7 vs school

Female (2022)6th percentile-9 vs school

Middle school

Hispanic (2025)50th percentile+21 vs school

Special Education (2021)42nd percentile+16 vs school

Low Socio Economic Status (2021)41st percentile+15 vs school

Male (2021)28th percentile~ school

Female (2021)18th percentile-8 vs school

By subject vs Connecticut (2025-2026) ?

Science29%-23 vs state

Mathematics28%-19 vs state

English Language Arts20%-31 vs state

★

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Schools Near John S. Martinez Sea and Sky STEM School

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Ranking:

E Elementary M Middle H High A Alternative P Private

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

School													Students/Teachers											Ranking (2026)				Ranking (2025)				NGSS Science (2026)		SBAC English Language Arts (2026)						SBAC Mathematics (2026)						Vaccination (2025-26)		Per Pupil Expenditures (2025)
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/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	NGSS Science 5th Grade	NGSS Science 8th Grade	SBAC English Language Arts 3rd Grade	SBAC English Language Arts 4th Grade	SBAC English Language Arts 5th Grade	SBAC English Language Arts 6th Grade	SBAC English Language Arts 7th Grade	SBAC English Language Arts 8th Grade	SBAC Mathematics 3rd Grade	SBAC Mathematics 4th Grade	SBAC Mathematics 5th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 7th Grade	SBAC Mathematics 8th Grade	Vaccination: Kindergartners with all required vaccines	Vaccination: Exemption rate	Total
John S. Martinez Sea and Sky STEM School	Public	PK, KG-8	100 James St.	New Haven	06513	South Central Connecticut Planning Region	New Haven School District	No	No	No	Yes	(475) 220-2000	486	28	17.3	83.1%	10 (2.1%)	26 (5.3%)	437 (89.9%)	5 (1.0%)	2 (0.4%)	0 (0.0%)	6 (1.2%)	10.8	428^th of 492 public elementary schools	13.0%		8.3	454^th of 493 public elementary schools	7.9%	26	28.9	807.0	19.6	2370.0	20.0	2432.0	20.4	2557.0	26.1	28.6	17.8	2438.0	20.4	44.4	100%	0%	$17,716
Family Academy of Multilingual Exploration	Public	PK, KG-8	255 Blatchley Ave.	New Haven	06513	South Central Connecticut Planning Region	New Haven School District	No	No	No	Yes	(475) 220-2500	441	29	15.2	76.4%	8 (1.8%)	10 (2.3%)	418 (94.8%)	1 (0.2%)	0 (0.0%)	0 (0.0%)	4 (0.9%)								(n/a)	462.0	782.0	2327.0	2360.0	2375.0	2415.0	2402.0	20.8	22.5	17.4	2406.0	2421.0	2434.0	22.9	100%	0%	$17,764
Fair Haven School	Public	PK, KG-8	164 Grand Ave.	New Haven	06513	South Central Connecticut Planning Region	New Haven School District	No	No	No	Yes	(475) 220-2600	734	53	13.8	76.0%	23 (3.1%)	43 (5.9%)	629 (85.7%)	28 (3.8%)	0 (0.0%)	1 (0.1%)	8 (1.1%)	3.1	491^st of 492 public elementary schools	0.2%		3.7	490^th of 493 public elementary schools	0.6%	1	11.7	17.9	2315.0	2343.0	11.7	2420.0	11.8	2478.0	8.2	12.5	2401.0	2399.0	7.1	2448.0	100%	0%	$19,181
Conte/West Hills Magnet School	Public, Magnet	PK, KG-8	511 Chapel St.	New Haven	06511	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	Yes	(475) 220-5400	496	46	10.7	81.9%	22 (4.4%)	168 (33.9%)	261 (52.6%)	21 (4.2%)	0 (0.0%)	0 (0.0%)	24 (4.8%)	10.6	429^th of 492 public elementary schools	12.8%		7.2	463^rd of 493 public elementary schools	6.1%	34	18.2	32.7	26.9	14.3	18.2	17.9	27.3	30.8	2395.0	32.1	27.3	2427.0	24.1	15.4	100%	0%	$19,946
Booker T. Washington Academy	Public, Charter	K-8	804 State Street	New Haven	06511	South Central Connecticut Planning Region	Booker T. Washington Academy District	Yes	No	No	Yes	(203) 691-6535	404	25	16.1	92.1%	4 (1.0%)	302 (74.8%)	75 (18.6%)	2 (0.5%)	0 (0.0%)	2 (0.5%)	19 (4.7%)	32.5	326^th of 492 public elementary schools	33.7%		24.1	349^th of 493 public elementary schools	29.2%	23	464.0	772.0	29.3	27.9	2424.0	60.0	2540.0	30.0	34.1	34.9	2418.0	44.4	41.5	2491.0	100%	0%	$17,553
Benjamin Jepson Magnet School	Public, Magnet	PK, KG-8	15 Lexington Ave.	New Haven	06513	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	No	(475) 220-2900	483	32	15.3	77.2%	45 (9.3%)	109 (22.6%)	288 (59.6%)	5 (1.0%)	2 (0.4%)	0 (0.0%)	34 (7.0%)	11.6	420^th of 492 public elementary schools	14.6%		8.4	451^st of 493 public elementary schools	8.5%	31	21.6	27.1	2376.0	37.5	21.6	30.0	20.0	22.9	15.4	2394.0	2402.0	2423.0	2418.0	2440.0	100%	0%	$21,009
East Rock Community Magnet School	Public, Magnet	PK, KG-8	133 Nash St.	New Haven	06511	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	No	(475) 220-5900	442	36	12.2	76.9%	47 (10.6%)	157 (35.5%)	175 (39.6%)	38 (8.6%)	4 (0.9%)	0 (0.0%)	20 (4.5%)	9.3	439^th of 492 public elementary schools	10.8%		10.1	430^th of 493 public elementary schools	12.8%	9	22.7	31.0	20.5	30.2	25.0	17.8	31.0	2536.0	13.6	2422.0	2428.0	20.0	19.0	2450.0	100%	0%	$20,715
Clinton Avenue School	Public	K-8	293 Clinton Ave.	New Haven	06513	South Central Connecticut Planning Region	New Haven School District	No	No	No	Yes	(475) 220-3300	446	38	11.7	75.8%	14 (3.1%)	38 (8.5%)	361 (80.9%)	19 (4.3%)	3 (0.7%)	1 (0.2%)	10 (2.2%)	4.8	483^rd of 492 public elementary schools	1.8%					(n/a)	459.0	21.3	14.0	17.8	2382.0	14.3	17.6	2491.0	14.0	2393.0	2397.0	2410.0	13.7	2432.0	94.4%	2.8%	$18,867
Worthington Hooker School	Public	K-8	180 Canner St.	New Haven	06511	South Central Connecticut Planning Region	New Haven School District	No	No	No	No	(475) 220-7200	420	22	19.0	36.4%	131 (31.2%)	135 (32.1%)	45 (10.7%)	82 (19.5%)	1 (0.2%)	0 (0.0%)	26 (6.2%)	77.9	124^th of 492 public elementary schools	74.8%		65.9	196^th of 493 public elementary schools	60.2%	72	76.3	48.9	63.6	2469.0	76.3	58.5	69.0	51.1	72.7	2470.0	2590.0	2580.0	2616.0	2579.0			$18,846
Celentano BioTech Health and Medical Magnet School	Public, Magnet	PK, KG-8	400 Canner Street	New Haven	06511	South Central Connecticut Planning Region	New Haven School District	No	Yes	No	Yes	(475) 220-3400	328	33	9.8	80.5%	11 (3.4%)	155 (47.3%)	122 (37.2%)	24 (7.3%)	0 (0.0%)	1 (0.3%)	15 (4.6%)								(n/a)	26.9	33.3	2373.0	2415.0	2444.0	2458.0	28.6	41.7	2427.0	32.1	2449.0	2448.0	2470.0	2516.0	100%	0%	$21,345

Frequently Asked Questions about John S. Martinez Sea and Sky STEM School

What district is John S. Martinez Sea and Sky STEM School in?

New Haven School District

What schools do graduates of John S. Martinez Sea and Sky STEM School attend?

Students who attend John S. Martinez Sea and Sky STEM School usually go on to attend:

High : Wilbur Cross High School

How many students attend John S. Martinez Sea and Sky STEM School?

In the 2024-25 school year, 486 students attended John S. Martinez Sea and Sky STEM School.

Is John S. Martinez Sea and Sky STEM School a good school?

John S. Martinez Sea and Sky STEM School ranks in the bottom 13.0% of Connecticut elementary schools.

What is the racial makeup of John S. Martinez Sea and Sky STEM School?

Students at John S. Martinez Sea and Sky STEM School are 90% Hispanic, 5% African American, 2% White, 1% Two or more races, 1% Asian.

Rate John S. Martinez Sea and Sky STEM School!

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Latest Connecticut data All new data »

2017–18 through 2025–26 immunization rates (updated)NewOct 19, 2026

2024–25 through 2025–26 attendance data & graduation ratesAug 31, 2026

2025–26 NGSS, SAT & SBAC test scoresAug 31, 2026

2024–25 school spending dataApr 2, 2026

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