Koinonia Academy
Plainfield · NJ · Catholic religious-affiliated · K-12 combined
Similar nearby schools
Most similar nearby schools
Mount Saint Mary Academy → Union Catholic Regional High School → St Joseph High School → Mother Seton Regional High School → Oratory Preparatory School → Timothy Christian School → An-Noor Academy → Immaculata High School →Keep this page current
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How Koinonia Academy compares for families
What families should know about Koinonia Academy.
- ▸ LocallyNJ students outperform the US average on NAEP 8th-grade math (+12 points).
- ▸ vs Similar SchoolsThe closest comparables nearby: Mount Saint Mary Academy, Union Catholic Regional High School, St Joseph High School and 5 more. See the sidebar to compare side-by-side.
For Parents
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Your state's public flagship
Rutgers University-New Brunswick
The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $24,406/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.
Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.
Enrollment trend & projection
Private school enrollment comes from the NCES Private School Universe Survey (PSS), which is collected every other year — not annually like public-school data. The most recent published collection is 2021–22; NCES targeted spring 2026 for the 2023–24 release — we'll load it as soon as it's published.
Most similar nearby high schools
The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.
| School | Type | Miles | HS enrollment | Trend |
|---|---|---|---|---|
| Mount Saint Mary Academy Watchung |
Private | 3.2 | 298 | -19.5% |
| Union Catholic Regional High School Scotch Plains |
Private | 3.7 | 588 | -27.0% |
| St Joseph High School Metuchen |
Private | 4.3 | 505 | -26.1% |
| Mother Seton Regional High School Clark |
Private | 6.5 | 194 | -16.7% |
| Oratory Preparatory School Summit |
Private | 8.8 | 394 | +5.6% |
| Timothy Christian School Piscataway |
Private | 4.8 | 353 | -7.3% |
| An-Noor Academy Piscataway |
Private | 5.6 | 332 | +0.6% |
| Immaculata High School Somerville |
Private | 10.4 | 487 | +4.5% |
At a glance
JSON · Using this page with an AI assistantKoinonia Academy is a private high school in Plainfield, NJ, enrolling 271 students in grades 9-12 in 2022.
Enrollment is up 40% from 2020 to 2022.
Sources: National Center for Education Statistics (enrollment), the federal Civil Rights Data Collection and EDFacts, state education agencies where named, and the school's own published documents where named.
Questions families ask
How many students attend Koinonia Academy? Koinonia Academy is a private high school in Plainfield, NJ, enrolling 271 students in grades 9-12 in 2022.
Analysis: Test Prep Gurus (High School Reach, highschoolreach.com). These figures may be quoted with attribution to Test Prep Gurus.
What does AI tell parents about Koinonia Academy?
When a parent asks an AI assistant about Koinonia Academy, the answer is built from a handful of sources, and Reach is often one of them. We will send the admissions office a short report on what AI says about Koinonia Academy and where it comes from. The first report is free.
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Related reading
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