Serving 669 students in grades Kindergarten-12, 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 15:1 is equal to the North Carolina state level of 15:1.
Minority enrollment is 45% of the student body (majority Hispanic and Black), which is lower than the North Carolina state average of 57% (majority Black and Hispanic).
Quick Stats (2025)
- School Type: Charter School
- Grades: Kindergarten-12
- Enrollment: 669 students
- Student:Teacher Ratio: 15:1
- Minority Enrollment: 45%
- 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 669 students has grown by 30% over five school years.
The teacher population of 46 teachers has grown by 91% over five school years.
School Type
Grades Offered
Grades Kindergarten-12
(No virtual instruction)
(No virtual instruction)
Total Students
669 students
Gender %
Total Classroom Teachers
46 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 0.65, which is less than the diversity score at state average of 0.71. 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)
59%
51%
Reading/Language Arts Test Scores (% Proficient)
59%
50%
Science Test Scores (% Proficient)
70-74%
63%
Student : Teacher Ratio
15:1
15:1
American Indian
1%
1%
Asian
8%
4%
Hispanic
16%
21%
Black
13%
25%
White
55%
43%
Hawaiian
n/a
n/a
Two or more races
7%
6%
All Ethnic Groups
Eligible for Free Lunch
1%
68%
Eligible for Reduced Lunch
1%
3%
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.
Profile last updated:
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?
669 students attend Union Day School.
What is the racial composition of the student body?
55% of Union Day School students are White, 16% of students are Hispanic, 13% of students are Black, 8% of students are Asian, 7% 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 15:1, which is equal to the North Carolina state average of 15:1.
What grades does Union Day School offer ?
Union Day School offers enrollment in grades Kindergarten-12 (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 3/25/2020
We have been at this school for 2 years and love it. Our daughter is excelling in all subjects. She has a love for learning and looks forward to going to school every day. The teachers and staff go above and beyond for the students. Highly recommended!
5 1/20/2020
We relocated here from up north. Schools in general are quite different in NC. We started out at the school that was in our neighborhood and that experience was awful. We then had to make a decision on what to do for our children's education and safety. We went on a tour at UDS and my husband and I both felt it was going to be a good fit. We are now so happy with our choice. Our children are both learning and developing. We are also very pleased with the communication on the teachers’ behalf. The school is still newer, and the staff seems to really care about the kids. I would say the only negative thing is that the property where it's located has no fields or gymnasium for the kids which I thought was strange. But as far as Education we are pleased.
5 9/9/2019
We love this school especially the teachers.
1 8/29/2019
We wanted to love this school but the past year was a complete disaster... it's disorganized, poorly run, and the leadership of the school and the UDS Parents Association treats everyone with apathy and disdain... unless you want your child to be a drone and receive a mediocre education at best, Union Day Charter School / UDS is not the place to go... it''s probably one of the worst schools in Union County and it is years away from achieving any meaningful improvement.
5 12/27/2018
Amazing school
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