C.A. McMillen High School, commonly known as McMillen High School, McMillen, or MHS, is a secondary school serving grades nine and ten, located in the East Cluster of the Plano Independent School District. Murphy Middle School and Armstrong Middle School feed into McMillen.
Serving 1,100 students in grades 9-10, Mcmillen High School ranks in the bottom 50% of all schools in Texas for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 30% (which is lower than the Texas state average of 44%). The percentage of students achieving proficiency in reading/language arts is 60% (which is higher than the Texas state average of 51%).
The student-teacher ratio of 17:1 is higher than the Texas state level of 14:1.
Minority enrollment is 72% of the student body (majority Hispanic), which is lower than the Texas state average of 75% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-10
- Enrollment: 1,100 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 72%
- Overall Testing Rank: Bottom 50% in TX
- Math Proficiency: 30% (Btm 50%)
- Reading Proficiency: 60% (Top 30%)
- Science Proficiency: 64% (Top 20%)
- Source: National Center for Education Statistics (NCES), TX Dept. of Education
Top Rankings
Mcmillen High School ranks among the top 20% of public schools in Texas for:
Category
Attribute
Science Proficiency
Diversity
School Overview
Mcmillen High School's student population of 1,100 students has declined by 12% over five school years.
The teacher population of 66 teachers has declined by 18% over five school years.
Grades Offered
Grades 9-10
Total Students
1,100 students
Gender %
Total Classroom Teachers
66 teachers
Year Founded
2011
School Rankings
Mcmillen High School ranks within the bottom 50% of all 8,096 schools in Texas (based off of combined math and reading proficiency testing data).
The diversity score of Mcmillen High School is 0.75, which is more than the diversity score at state average of 0.64. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#4231 out of 8096 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
30%
44%
Reading/Language Arts Test Scores (% Proficient)
60%
51%
Science Test Scores (% Proficient)
64%
46%
Student-Teacher Ratio
17:1
14:1
American Indian
n/a
n/a
Asian
21%
6%
Hispanic
35%
53%
Black
12%
13%
White
28%
25%
Hawaiian
n/a
n/a
Two or more races
4%
3%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
36%
57%
Eligible for Reduced Lunch
4%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), TX Dept. of Education
School Notes
- School Mascot: Panther
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Mcmillen High School's ranking?
Mcmillen High School is ranked #4231 out of 8,096 schools, which ranks it among the bottom 50% of public schools in Texas.
What schools are Mcmillen High School often compared to?
Mcmillen High Schoolis often viewed alongside schools like Williams High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
30% of students have achieved math proficiency (compared to the 44% TX state average), while 60% of students have achieved reading proficiency (compared to the 51% TX state average).
How many students attend Mcmillen High School?
1,100 students attend Mcmillen High School.
What is the racial composition of the student body?
35% of Mcmillen High School students are Hispanic, 28% of students are White, 21% of students are Asian, 12% of students are Black, and 4% of students are Two or more races.
What is the student-teacher ratio of Mcmillen High School?
Mcmillen High School has a student ration of 17:1, which is higher than the Texas state average of 14:1.
What grades does Mcmillen High School offer ?
Mcmillen High School offers enrollment in grades 9-10
What school district is Mcmillen High School part of?
Mcmillen High School is part of Plano Independent School District.
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