Mcmillen H S
Plano Isd · Collin County · High school
Mcmillen H S enrolled 1,010 students in 2025. Its Algebra I passing rate sits in the bottom 24% of Texas campuses (2025).
At a glance vs. Texas
College entrance exams
Took the SAT or ACT
Share of graduates who took a college entrance exam.
Can top 100% where juniors test (the denominator is graduates).
Avg SAT math
Average SAT math score among test-takers (200-800). The line at 530 is the college-ready benchmark.
The SAT was rescaled in 2016. Never compare across the dashed line.
Avg SAT reading/writing
Average SAT reading and writing score among test-takers (200-800). The line at 480 is the college-ready benchmark.
The SAT was rescaled in 2016. Never compare across the dashed line.
Avg ACT math
Average ACT math score among test-takers (1-36).
Avg ACT English
Average ACT English score among test-takers (1-36).
Avg ACT science
Average ACT science score among test-takers (1-36).
State tests (high school)
Algebra I proficiency
Met grade level on the Algebra I STAAR, the state test nearly every student takes.
Biology proficiency
Met grade level on the Biology STAAR.
English II proficiency
Met grade level on the English II STAAR.
Advanced courses
Advanced course completion
Completed at least one advanced or dual-credit course (grades 11-12).
Enrollment
Enrollment
Students enrolled.
Every measure, latest year
| Measure | Year | All | Black | Hispanic | White | Low-income |
|---|---|---|---|---|---|---|
| Algebra I proficiency | 2025 | 28.7% | 23.8% | 14.7% | 40.9% | 16.5% |
| Biology proficiency | 2025 | 63.7% | 50% | 44.1% | 73.9% | 41.5% |
| English II proficiency | 2025 | 72.2% | 66.1% | 53.5% | 83% | 53.2% |
| Advanced course completion | 2014 | 0% | – | – | – | 0% |
More schools in Plano Isd
Years are the school year the students were measured in, not the report year. Missing points mean the state masked a small group for privacy, not zero. Data: Texas Education Agency TAPR. Download this school's data (JSON).