Serving 638 students in grades Kindergarten-11, Union Day School ranks in the top 30% of all schools in North Carolina for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 59% (which is higher than the North Carolina state average of 51%). The percentage of students achieving proficiency in reading/language arts is 59% (which is higher than the North Carolina state average of 50%).
The student-teacher ratio of 13:1 is lower than the North Carolina state level of 15:1.
Minority enrollment is 46% of the student body (majority Black and Hispanic), which is lower than the North Carolina state average of 58% (majority Black and Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-11
- Enrollment: 638 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 46%
- Overall Testing Rank: Top 30% in NC
- Math Proficiency: 59% (Top 50%)
- Reading Proficiency: 59% (Top 30%)
- Science Proficiency: 70-74% (Top 30%)
- Source: National Center for Education Statistics (NCES), NC Dept. of Education
School Overview
Union Day School's student population of 638 students has grown by 10% over five school years.
The teacher population of 48 teachers has grown by 77% over five school years.
School Type
Grades Offered
Grades Kindergarten-11
(No virtual instruction)
(No virtual instruction)
Total Students
638 students
Total Classroom Teachers
48 teachers
School Rankings
Union Day School ranks within the top 30% of all 2,617 schools in North Carolina (based off of combined math and reading proficiency testing data).
The diversity score of Union Day School is 0.66, which is less than the diversity score at state average of 0.72. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#774 out of 2617 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
(21-22)59%
51%
Reading/Language Arts Test Scores (% Proficient)
59%
50%
Science Test Scores (% Proficient)
70-74%
63%
Student-Teacher Ratio
13:1
15:1
American Indian
1%
1%
Asian
7%
5%
Hispanic
16%
22%
Black
16%
24%
White
54%
42%
Hawaiian
n/a
n/a
Two or more races
6%
6%
All Ethnic Groups
Eligible for Free Lunch
1%
72%
Eligible for Reduced Lunch
1%
1%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NC Dept. of Education
School Notes
- A tuition-free public charter school serving NC students grades K-12 in Union County, Mecklenburg County, and the Charlotte area.
Frequently Asked Questions
What is Union Day School's ranking?
Union Day School is ranked #774 out of 2,617 schools, which ranks it among the top 30% of public schools in North Carolina.
What schools are Union Day School often compared to?
Union Day Schoolis often viewed alongside schools like Union Prep Academy At Indian Trail, Union Academy by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
59% of students have achieved math proficiency (compared to the 51% NC state average), while 59% of students have achieved reading proficiency (compared to the 50% NC state average).
How many students attend Union Day School?
638 students attend Union Day School.
What is the racial composition of the student body?
54% of Union Day School students are White, 16% of students are Hispanic, 16% of students are Black, 7% of students are Asian, 6% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of Union Day School?
Union Day School has a student ration of 13:1, which is lower than the North Carolina state average of 15:1.
What grades does Union Day School offer ?
Union Day School offers enrollment in grades Kindergarten-11 (No virtual instruction).
What school district is Union Day School part of?
Union Day School is part of Union Day School District.
School Reviews
5 10/10/2025
Amazing school
Review Union Day School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
