Koinonia Academy, is a private grammar school and high school dedicated to providing students, grades K-12, with a quality Catholic Education.
Koinonia is located on its own beautiful eleven-acre campus in historic Plainfield, New Jersey.
Koinonia Academy was founded in 1984 by The People of Hope, a charismatic, covenant community, in order to provide children with an orthodox religious education and strong academic foundation.

Quick Stats (2021-22)

  • Top Ranked NJ School
  • Grades: Prekindergarten-12
  • Students: 253 students
  • Application Deadline: None / Rolling

Top Rankings

Koinonia Academy ranks among the top 20% of private schools in New Jersey for:


School Overview

Religious Affiliation
Grades Offered
Grades Prekindergarten-12
Year Founded

Student Body

Total Students
253 students
Student Body Type
% Students of Color
State avg.: 39%
Students by Grade
Koinonia Academy Student By Grade

Academics and Faculty

Total Classroom Teachers
44 teachers
Student : Teacher Ratio
National avg.: 13:1
Average SAT score
Classroom Dress Code

Tuition and Acceptance Rate

Admission Deadline
None / Rolling
Tuition Notes
Comparable with similar schools. Schedule an appointment to discuss tuition.


Total ExtracurricularsTotal Extra-curric.
4 extracurriculars
7th and 8th Grade Enrichment, Choir, Drama, Youth Group

School Notes

  • The Koinonia Academy staff and faculty are committed to helping parents raise Christian students with strong moral character derived from their faith in God and their personal relationship with Jesus Christ. In order to do this, Koinonia Academy provides: * Daily Prayer with Students * Christian Character Formation * Dedicated Catholic Teachers * First Friday Mass * Emphasis on Roman Catholic Church Teaching Koinonia provides students with a well rounded Catholic education, offering extra-curricular activities such as choir and drama, as well as a Christian Youth Group. Mission trips and service opportunities are also common over the course of the school year. Small class sizes ensure that students get personal attention from teachers. If you are interested in learning more about Koinonia Academy, contact us today for further information or to set up an appointment

School Reviews

  5.00 out of 5  (6 reviews)
All seven of my children have graduated from Koinonia. The teachers go above and beyond for every student, offering both challenging academics and lovingly accommodating special needs. A few of my grown children have returned there to be teachers after college because they wanted to 'give back'. KA provides an environment that fosters strong faith and character, and has been a tremendous support to us in raising our children in the Catholic faith. Amazing Classical curriculum! ...and a great sports program too!
- Posted by
I love KA, the people there are fun and amazing. My teachers are the best they really care about us, students. I love charismatic it's one of my favorite parts. Being able to play basketball with my friends and making it to the finals was really huge and our school celebrated our team even though we got second. KA is truly the best school you can send your kids. :)
- Posted by
I attended Koinonia for 13 years and now my daughters attend there. We have nothing but good things to say about KA. We are so blessed to have our children in an environment which has a healthy balance of academics and character and faith development. All of the teachers are wonderful as well.
- Posted by
KOINONIA has been a wonderful blessing. We love the school and especially the sports program with 2 championships! I especially love that every kid gets to play from gr 3 to HS. KA is a truly special school
- Posted by
We love Koinonia. I have two children currently enrolled in kindergarten and 3rd grade. The class sizes are small and the teachers truly care about the students. The Catholic part of their education is real and not watered down. This school also does not use common core. We have no complaints about KA! Highly highly recommended for anyone looking for an affordable authentic Catholic education.
- Posted by
This school is an amazing place where I''ve seen my children be challenged and encouraged to be the best person in their character and student academically that they can be!
- Posted by

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Quick Stats (2021-22)

  • Top Ranked NJ School
  • Grades: Prekindergarten-12
  • Students: 253 students
  • Application Deadline: None / Rolling

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Did You Know?

The average private school tuition in Union County, NJ is $5,625 for elementary schools and $9,713 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Union County, NJ is 95% (read more about average acceptance rates across the country).

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