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Delaware County

Upper Darby School District

36.3
Academic Index · #106 of 112 (tie)
Browse all 145 homes for sale in Upper Darby

Academic outcomes (2024-25)

% proficient or advanced, official PDE district files. Black tick = state average.

PSSA English (gr. 3-8)25.1%PA 48.5%
PSSA Math (gr. 3-8)18.6%PA 41.7%
Keystone Algebra I18.9%PA 44.3%
Keystone Literature32.3%PA 62.1%
Keystone Biology31.2%PA 49.4%
4-year graduation rate82.9%PA 89.1%

The true tax picture

School millage (2025-26)
26.523 mills
Effective school tax (of market value)
1.45%/yr
Typical total (county + muni + school)
2.36%/yr
On a $450,000 purchase
≈ $10,605/yr
Median sale, 12 mo (912 sales)
$260,000

Rates assume an assessment at Delaware County's current Common Level Ratio (54.64%). PA does not reassess on sale. Exact math for any price: the calculator.

Family & student support

Beyond test scores: official, public measures of student support and community context that families ask about. District- and county-level only; never a rating of an individual school, student, or home.

Support & services

U.S. Dept. of Education / NCES, 2021-22. Gray figures are the PA average.

Special-education enrollment
19.6%PA avg 20.3%
Students per teacher
14.9:1PA avg 13.9:1
Students per school counselor
442:1PA avg 352:1 · recommended 250:1
Students per school psychologist
826:1PA avg 1,165:1 · recommended 500:1

Special-education enrollment is the share of students receiving IEP or related services: the support a district provides, not a drawback. Counselor and psychologist ratios compare against ASCA (250:1) and NASP (500:1) recommendations.

Delaware County: overdose context

Pennsylvania Department of Health. County-level, not specific to any school or district.

115drug-overdose deaths in 2024
20122024

Down from 170 the prior year and a peak of 257 in 2017. Recent years are provisional.

School climate & safety

70.9%regular attendance

Share of students present at least 90% of enrolled days, vs. 79.6% statewide. Enrollment-weighted across the district's schools. Pennsylvania Future Ready PA Index, 2024-25.

U.S. Dept. of Education, Office for Civil Rights — Civil Rights Data Collection (CRDC), 2021-22. Incidents per 1,000 enrolled students; one student can account for several incidents, so this is not the share of students involved. Figures are privacy-adjusted at the school level; small district counts are shown as “fewer than 10.”

Bullying & harassment allegations
1.9 / 1,000
Out-of-school suspensions
62.3 / 1,000
Referrals to law enforcement
13.5 / 1,000
School-related arrests
0.9 / 1,000
Restraint or seclusion
Fewer than 10

Bullying counts are incidents a district formally reported under federal civil-rights categories, a widely underreported measure. A low number (including zero) often reflects reporting practices more than the absence of bullying.

These figures describe districts and counties, not individual schools, students, or homes. They are official public data and may be self-reported, lag by a year or more, or be underreported. They are context for families, not a safety rating. Sources: U.S. Department of Education, NCES Common Core of Data (2021-22); Pennsylvania Department of Health; Pennsylvania Future Ready PA Index (2024-25); U.S. Dept. of Education, Office for Civil Rights — Civil Rights Data Collection (CRDC) (2021-22).

Tax bill by municipality

MunicipalityMuni millageTotal millageEffective rateTax on $450,000
Clifton Heights Borough11.234 mills42.37 mills2.31%$10,417/yr
Millbourne Borough12 mills43.13 mills2.36%$10,605/yr
Upper Darby Township14.02 mills45.15 mills2.47%$11,102/yr

Homes for sale in Upper Darby

Active listings across the district's towns. Every home here feeds the same schools.

Common questions

Is Upper Darby a good school district?

Upper Darby scores 36.3 of 100 on the NookLocal Academic Index, #106 of 112 districts serving Bucks, Chester, Delaware, Montgomery, Berks, Lancaster, and the Lehigh Valley. Components (official 2025 PDE data): PSSA proficiency 22% (state ~45%), Keystone proficiency 28%, graduation rate 82.9% (state 89.1%). The index measures outcomes, not school effectiveness in isolation.

What are property taxes in Upper Darby School District?

The district levies 26.523 mills (2025-26) on Delaware County's assessment base, an effective school tax of about 1.45% of market value at the current Common Level Ratio. With county and typical municipal millage, the total runs about 2.36%, roughly $10,605 per year on a $450,000 purchase. Exact bills vary by municipality (2.31%–2.47% across 3) and by the home's actual assessment.

What towns are in Upper Darby School District?

NookLocal-covered towns served by Upper Darby: Clifton Heights Borough, Millbourne Borough, Upper Darby Township. The taxing municipalities are Clifton Heights Borough, Millbourne Borough, Upper Darby Township. A specific home's district is shown on every NookLocal listing.

Upper Darby vs. Southeast Delco: how do they compare?

Academically: Upper Darby 36.3 vs. Southeast Delco 36.3 on the Academic Index. On taxes: 2.36% vs. 2.54% of home value per year, about $10,605 vs. $11,446 on a $450,000 purchase. Full comparison on the school district value matrix.

What is the attendance rate in Upper Darby School District?

70.9% of Upper Darby students are regularly present (enrolled and attending at least 90% of school days) versus 79.6% statewide (Future Ready PA Index, 2024-25).

Does Upper Darby support students with IEPs and special needs?

19.6% of students receive special-education services (Pennsylvania average 20.3%), with about 442 students per school counselor and 826 per school psychologist. The Family & student support section above has the full breakdown.

Is Upper Darby a safe school district?

Rather than a single safety score, NookLocal shows official district figures. Regular attendance is 70.9% (state 79.6%). For 2021-22, the federal Civil Rights Data Collection reports about 62.3 out-of-school suspensions and 13.5 law-enforcement referrals per 1,000 students. These figures describe the district, not individual schools, and reported bullying is widely undercounted. See the Family & student support section.

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Academic data: PA Department of Education district-level files (2024-25). Tax data: county assessment offices and STEB. Estimates only. Verify with the district and county before transacting. Full methodology on the value matrix.

Why NookLocal

Moving to or within the Greater Philadelphia area? You found the right place.

NookLocal has the same homes you'll find on Zillow, Trulia, or Realtor.com, plus the local context they leave out: school district rankings, the full property-tax bill at today's rates, and sourced safety data.