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Mary R. Tisko School

Q: Is Mary R. Tisko School a good school?

Mary R. Tisko School ranks 94 th of 491 Connecticut elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public Grades PK, KG-4

94^th

SchoolDigger Rank ?

of 491 Connecticut Elementary Schools

Better than 81% of Connecticut elementary schools

Summary

Mary R. Tisko School is an elementary school in Branford, CT, serving 365 students in grades PK–4 within the Branford School District. While the district overall ranks in the 46th percentile of Connecticut districts, Tisko is a clear standout — ranked 94th out of 491 elementary schools statewide, placing it in the 81st percentile with a 4-star rating. It is the highest-performing elementary school in Branford, well ahead of Mary T. Murphy School (51st percentile) and John B. Sliney School (58th percentile), and it even ranks above A. W. Cox School in Guilford (73rd percentile), which serves a similarly advantaged population.

Mathematics is clearly Tisko's signature subject. In 2025–2026, 78.3% of 3rd graders and 78.1% of 4th graders were proficient in math — roughly 26 percentage points above the state average in both grades. Tisko's 4th grade math rate also exceeds A. W. Cox School by nearly 8 points. ELA is strong as well, with 76.6% of 4th graders proficient — far above the district average of 62.9% and nearly matching A. W. Cox (77.8%). The school also has a low chronic absenteeism rate of just 4.6%, less than half the district rate of 10.7%, and only 17.8% of students qualify for free/reduced lunch, compared with roughly 44–47% at the other Branford elementary schools.

Tisko's state ranking has climbed steadily, from the 54th percentile in 2020–2021 to the current 81st percentile — its best showing on record. One notable internal trend is a gender gap in subgroup rankings: male students rank in the 90th percentile statewide, while female students rank in the 59th percentile. Compared with nearby East Haven schools such as Grove J. Tuttle School, Momauguin School, and Deer Run School, Tisko's proficiency rates are dramatically higher, and its chronic absenteeism is far lower. With consistent math strength, rising overall rankings, and very low absenteeism, Mary R. Tisko School is a regional standout and a clear academic leader within its district.

365

Students ?

11.8

Student/teacher ratio ?

$23,554

Per pupil spending ?

17.8%

Free/discounted lunch ?

118 Damascus Rd.
Branford, CT 06405

(203) 483-1826

District: Branford School District

Students who attend Mary R. Tisko School usually attend:

Middle:	Francis Walsh Intermediate School
High:	Branford High School

Racial breakdown:

White:

81.9%

Hispanic:

11.8%

Two or more races:

3.8%

See top rated Connecticut elementary schools

Compare Mary R. Tisko School to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 78th percentile in 2016 → 81st in 2026

Strengths

✓Test scores above the Connecticut average (73% vs 51% meeting standards)

✓Ranks in the top 19% of Connecticut elementary schools

✓Small classes — about 12 students per teacher

Worth a look

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2025-2026) ?

This school73%

District avg62%

Connecticut avg51%

94^th of 491

Connecticut public elementary schools ?

Top 19%▲ up 3 pts since 2016

From top 22% (2016) to top 19% (2026)

See the entire ranking list of Connecticut Elementary Schools →

★★★★★

SchoolDigger rating ?

1^st of 3Elementary Schools in the Branford School District

83^rd of 153Branford 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)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	82.2	94 of 491	80.9%	★★★★☆
2025	76.1	135 of 493	72.6%	★★★★☆
2024	72.5	156 of 497	68.6%	★★★☆☆
2023	62.8	198 of 491	59.7%	★★★☆☆
2022	63.8	191 of 490	61.0%	★★★☆☆
2021	55.3	250 of 538	53.5%	★★★☆☆
2019	64.1	208 of 522	60.2%	★★★☆☆
2018	70.0	183 of 532	65.6%	★★★☆☆
2017	69.1	176 of 519	66.1%	★★★☆☆
2016	80.1	116 of 518	77.6%	★★★★☆
2015	76.5	148 of 551	73.1%	★★★★☆
2013	84.4	24 of 557	95.7%	★★★★★
2012	80.8	66 of 564	88.3%	★★★★☆
2011	84.4	14 of 565	97.5%	★★★★★
2010	84.7	10 of 579	98.3%	★★★★★
2009	78.9	102 of 566	82.0%	★★★★☆
2008	79.2	100 of 565	82.3%	★★★★☆
2007	81.9	59 of 568	89.6%	★★★★☆
2006	84.5	30 of 570	94.7%	★★★★★

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	70.3	92 of 225	59.1%	★★★☆☆
2023	51.9	131 of 230	43.0%	★★☆☆☆
2021	42.2	249 of 455	45.3%	★★☆☆☆
2018	63.4	118 of 259	54.4%	★★★☆☆

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	84.0	24 of 232	89.7%	★★★★★
2021	58.2	186 of 445	58.2%	★★★☆☆
2019	69.0	96 of 247	61.1%	★★★☆☆

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	66.2	93 of 246	62.2%	★★★☆☆
2025	53.4	133 of 248	46.4%	★★☆☆☆
2024	48.9	155 of 250	38.0%	★★☆☆☆
2023	38.5	185 of 262	29.4%	★☆☆☆☆
2022	27.2	212 of 252	15.9%	★☆☆☆☆
2021	18.2	284 of 327	13.1%	★☆☆☆☆
2019	34.4	219 of 295	25.8%	★☆☆☆☆
2018	45.9	187 of 296	36.8%	★★☆☆☆

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)

Male (2026)90th percentile+9 vs school

White (2026)62nd percentile-19 vs school

Female (2026)59th percentile-22 vs school

By subject vs Connecticut (2025-2026) ?

Mathematics78%+26 vs state

English Language Arts68%+19 vs state

★

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Schools Near Mary R. Tisko 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 Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				NGSS Science (2026)	SBAC English Language Arts (2026)					SBAC Mathematics (2026)					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/Discounted Lunch Recipients (2025)	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	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 8th Grade	SBAC Mathematics 3rd Grade	SBAC Mathematics 4th Grade	SBAC Mathematics 5th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 8th Grade	Total
Mary R. Tisko School	Public	PK, KG-4	118 Damascus Rd.	Branford	06405	South Central Connecticut Planning Region	Branford School District	No	No	No	No	(203) 483-1826	365	31	11.8	17.8%	299 (81.9%)	3 (0.8%)	43 (11.8%)	5 (1.4%)	0 (0.0%)	1 (0.3%)	14 (3.8%)	82.2	94^th of 491 public elementary schools	80.9%		76.1	135^th of 493 public elementary schools	72.6%	41		60.9	76.6				78.3	78.1				$23,554
John B. Sliney School	Public	PK, KG-4	23 Eades St.	Branford	06405	South Central Connecticut Planning Region	Branford School District	No	No	No	Yes	(203) 481-5386	252	28	8.8	47.2%	162 (64.3%)	9 (3.6%)	53 (21.0%)	8 (3.2%)	0 (0.0%)	0 (0.0%)	20 (7.9%)	63.6	204^th of 491 public elementary schools	58.5%		60.6	212^th of 493 public elementary schools	57.0%	8		58.2	61.2				60.0					$26,959
Mary T. Murphy School	Public	PK, KG-4	14 Brushy Plain Rd.	Branford	06405	South Central Connecticut Planning Region	Branford School District	No	No	No	Yes	(203) 483-1832	318	31	10.3	44.0%	167 (52.5%)	12 (3.8%)	72 (22.6%)	46 (14.5%)	0 (0.0%)	0 (0.0%)	21 (6.6%)	54.8	239^th of 491 public elementary schools	51.3%		55.5	234^th of 493 public elementary schools	52.5%	5		53.3	52.1				65.0	50.7				$25,669
Jerome Harrison School	Public	PK, KG-2	335 Foxon Rd.	North Branford	06471	South Central Connecticut Planning Region	North Branford School District	No	No	No	Yes	(203) 484-1235	385	30	12.8	24.9%	317 (82.3%)	5 (1.3%)	36 (9.4%)	7 (1.8%)	1 (0.3%)	0 (0.0%)	19 (4.9%)								(n/a)												$19,123
Deer Run School	Public	PK, KG-2	311 Foxon Rd.	East Haven	06512	South Central Connecticut Planning Region	East Haven School District	No	No	No	Yes	(203) 468-3324	232	21	11.0	54.7%	100 (43.1%)	16 (6.9%)	93 (40.1%)	7 (3.0%)	0 (0.0%)	0 (0.0%)	16 (6.9%)								(n/a)												$25,261
Grove J. Tuttle School	Public	K-5	108 Prospect St.	East Haven	06512	South Central Connecticut Planning Region	East Haven School District	No	No	No	Yes	(203) 468-3315	270	22	12.3	65.9%	116 (43.0%)	11 (4.1%)	121 (44.8%)	17 (6.3%)	0 (0.0%)	0 (0.0%)	5 (1.9%)	11.9	416^th of 491 public elementary schools	15.3%		9.3	441^st of 493 public elementary schools	10.5%	25	31.9	20.0	25.5				18.0	31.9	19.1			$17,205
Carbone School/East Haven Academy	Public	1-8	200 Tyler St.	East Haven	06512	South Central Connecticut Planning Region	East Haven School District	No	No	No	Yes	(203) 468-3219	363	24	15.3	47.7%	226 (62.3%)	15 (4.1%)	92 (25.3%)	7 (1.9%)	0 (0.0%)	0 (0.0%)	23 (6.3%)	15.6	396^th of 491 public elementary schools	19.3%		17.4	384^th of 493 public elementary schools	22.1%	12		20.5		40.5	35.7	44.4	32.6	21.7	16.7	23.8	22.2	$16,145
Overbrook Early Learning Center	Public	PK-K	54 Gerrish Ave.	East Haven	06512	South Central Connecticut Planning Region	East Haven School District	No	No	No	No	(203) 468-3305	173	4	43.2	56.1%	65 (37.6%)	13 (7.5%)	84 (48.6%)	4 (2.3%)	0 (0.0%)	0 (0.0%)	7 (4.0%)								(n/a)												$21,220
A. W. Cox School	Public	K-4	143 Three Mile Course	Guilford	06437	South Central Connecticut Planning Region	Guilford School District	No	No	No	Yes	(203) 453-5291	255	25	10.2	14.9%	191 (74.9%)	3 (1.2%)	33 (12.9%)	13 (5.1%)	0 (0.0%)	0 (0.0%)	15 (5.9%)	77.2	132^nd of 491 public elementary schools	73.1%		77	132^nd of 493 public elementary schools	73.2%				77.8				63.3	70.4				$22,757
Dominick H. Ferrara School	Public	3-5	22 Maynard Rd.	East Haven	06512	South Central Connecticut Planning Region	East Haven School District	No	No	No	Yes	(203) 468-3318	153	14	11.2	63.4%	64 (41.8%)	9 (5.9%)	66 (43.1%)	8 (5.2%)	0 (0.0%)	0 (0.0%)	6 (3.9%)	30.4	332^nd of 491 public elementary schools	32.4%		35.6	298^th of 493 public elementary schools	39.6%	34		28.0	52.3	43.1			54.0	36.4	28.1			$20,641

Frequently Asked Questions about Mary R. Tisko School

Is Mary R. Tisko School a good school?

Mary R. Tisko School ranks 94^th of 491 Connecticut elementary schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Mary R. Tisko School?

In the 2024-25 school year, 365 students attended Mary R. Tisko School.

What schools do graduates of Mary R. Tisko School attend?

Students who attend Mary R. Tisko School usually go on to attend:

Middle : Francis Walsh Intermediate School
High : Branford High School

What is the racial makeup of Mary R. Tisko School?

Students at Mary R. Tisko School are 82% White, 12% Hispanic, 4% Two or more races, 1% Asian.

What district is Mary R. Tisko School in?

Branford School District

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Latest Connecticut data All new data »

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

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

2024–25 school spending dataApr 2, 2026

2024–25 attendance dataNov 6, 2025

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.