$285,000
5 bd|1.5 ba|1,515 sqft
917 Pembroke Ave, Lansdowne, PA 19050
Listed by Crown Homes Real Estate
Delaware County
William Penn School District
33.6
Academic Index · #108 of 112
Academic outcomes (2024-25)
% proficient or advanced, official PDE district files. Black tick = state average.
PSSA English (gr. 3-8)26.7%PA 48.5%
PSSA Math (gr. 3-8)16.0%PA 41.7%
Keystone Algebra I12.1%PA 44.3%
Keystone Literature34.7%PA 62.1%
Keystone Biology12.9%PA 49.4%
4-year graduation rate85.4%PA 89.1%
The true tax picture
- School millage (2025-26)
- 32.86 mills
- Effective school tax (of market value)
- 1.80%/yr
- Typical total (county + muni + school)
- 2.66%/yr
- On a $450,000 purchase
- ≈ $11,953/yr
- Median sale, 12 mo (373 sales)
- $239,000
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
- 20.1%PA avg 20.3%
- Students per teacher
- 14.7:1PA avg 13.9:1
- Students per school counselor
- 309:1PA avg 352:1 · recommended 250:1
- Students per school psychologist
- 928:1PA 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
64.4%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
- 2.2 / 1,000
- Out-of-school suspensions
- 74.5 / 1,000
- Referrals to law enforcement
- 4.3 / 1,000
- School-related arrests
- Fewer than 10
- 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).
Schools in William Penn
10 public schools. Open any for grades, enrollment, and attendance.
Elementary schools
Middle schools
High schools
Tax bill by municipality
| Municipality | Muni millage | Total millage | Effective rate | Tax on $450,000 |
|---|---|---|---|---|
| Aldan Borough | 5.5 mills | 42.97 mills | 2.35% | ≈ $10,565/yr |
| Lansdowne Borough | 7.3039 mills | 44.77 mills | 2.45% | ≈ $11,009/yr |
| Yeadon Borough | 10.932 mills | 48.40 mills | 2.64% | ≈ $11,901/yr |
| East Lansdowne Borough | 11.36 mills | 48.83 mills | 2.67% | ≈ $12,006/yr |
| Colwyn Borough | 18.2 mills | 55.67 mills | 3.04% | ≈ $13,688/yr |
| Darby Borough | 18.4 mills | 55.87 mills | 3.05% | ≈ $13,737/yr |
Browse homes in William Penn
Homes for sale in William Penn
Active listings across the district's towns. Every home here feeds the same schools.
$175,000
4 bd|2 ba|1,188 sqft
249 N 7th St, Darby, PA 19023
Listed by Long & Foster Real Estate, Inc.
$150,000
3 bd|1 ba|1,120 sqft
1302 Wycombe Ave, Darby, PA 19023
Listed by RE/MAX Main Line - West Chester
$180,000
3 bd|1 ba|1,636 sqft
306 S 3rd St, Darby, PA 19023
Listed by Skyline Realty & Property Managment LLC
$399,900
3 bd|2 ba|2,375 sqft
47 Drexel Ave, Lansdowne, PA 19050
Listed by Century 21 Advantage Gold - Newtown Square
$400,000
3 bd|2 ba|2,320 sqft
188 Glentay Ave, Lansdowne, PA 19050
Listed by Coldwell Banker Realty
$205,000
3 bd|1.5 ba|1,464 sqft
109 Chestnut St, Darby, PA 19023
Listed by HomeZu by Simple Choice
$350,000
4 bd|2 ba|1,707 sqft
107 Gladstone Rd, Lansdowne, PA 19050
Listed by EXP Realty, LLC
$190,450
3 bd|1.5 ba|1,373 sqft
213 Melrose Ave, Lansdowne, PA 19050
Listed by RE/MAX Prime Real Estate
$370,000
4 bd|2 ba|1,631 sqft
324 Aldan Ave, Aldan, PA 19018
Listed by Real of Pennsylvania
$289,000
3 bd|1 ba|1,570 sqft
428 Walnut Ave, Aldan, PA 19018
Listed by Compass Pennsylvania, LLC
$259,900
3 bd|2.5 ba|1,440 sqft
407 Coventry Ave, Darby, PA 19023
Listed by Long & Foster Real Estate, Inc.
Common questions
Is William Penn a good school district?
William Penn scores 33.6 of 100 on the NookLocal Academic Index, #108 of 112 districts serving Bucks, Chester, Delaware, Montgomery, Berks, Lancaster, and the Lehigh Valley. Components (official 2025 PDE data): PSSA proficiency 21% (state ~45%), Keystone proficiency 20%, graduation rate 85.4% (state 89.1%). The index measures outcomes, not school effectiveness in isolation.
What are property taxes in William Penn School District?
The district levies 32.86 mills (2025-26) on Delaware County's assessment base, an effective school tax of about 1.80% of market value at the current Common Level Ratio. With county and typical municipal millage, the total runs about 2.66%, roughly $11,953 per year on a $450,000 purchase. Exact bills vary by municipality (2.35%–3.05% across 6) and by the home's actual assessment.
What towns are in William Penn School District?
NookLocal-covered towns served by William Penn: Aldan Borough, Colwyn Borough, Darby Borough, East Lansdowne Borough, Lansdowne Borough, Yeadon Borough. The taxing municipalities are Aldan Borough, Lansdowne Borough, Yeadon Borough, East Lansdowne Borough, Colwyn Borough, Darby Borough. A specific home's district is shown on every NookLocal listing.
William Penn vs. Southeast Delco: how do they compare?
Academically: William Penn 33.6 vs. Southeast Delco 36.3 on the Academic Index. On taxes: 2.66% vs. 2.54% of home value per year, about $11,953 vs. $11,446 on a $450,000 purchase. Full comparison on the school district value matrix.
What is the attendance rate in William Penn School District?
64.4% of William Penn students are regularly present (enrolled and attending at least 90% of school days) versus 79.6% statewide (Future Ready PA Index, 2024-25).
Does William Penn support students with IEPs and special needs?
20.1% of students receive special-education services (Pennsylvania average 20.3%), with about 309 students per school counselor and 928 per school psychologist. The Family & student support section above has the full breakdown.
Is William Penn a safe school district?
Rather than a single safety score, NookLocal shows official district figures. Regular attendance is 64.4% (state 79.6%). For 2021-22, the federal Civil Rights Data Collection reports about 74.5 out-of-school suspensions and 4.3 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.
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