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SCHOOL COMMUNITY·MERCEDES ISD·NCES 483025003388

Mercedes High School

1200 S FLORIDA, MERCEDES, TX 78570 · (956) 514-2100 · Hidalgo County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL903 STUDENTS
F
allk12 Grade
Scored higher than 4% of Texas public high schools
  • FTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • DBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • B-Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Texas public high schools

Enrollment
903
High
DISTRICT 340 · STATE 796
Student : Teacher
14.8:1
61 FTE teachers
DISTRICT 13.9:1 · STATE 15.1:1
Free / Reduced Lunch
92%
831 students
DISTRICT 91% · STATE 65%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 927530%
Grade 1021223%
Grade 1120423%
Grade 1221223%
Student demographics
5%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 4% · STATE 63% · US 70%
White
152%
DISTRICT 2% · STATE 24% · US 43%
Hispanic
88298%
DISTRICT 98% · STATE 54% · US 30%
Black
20%
DISTRICT 0% · STATE 13% · US 15%
Two+
20%
DISTRICT 0% · STATE 3% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
10%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
48454%
Female
41946%

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Test scores

STAAR 2025-26 . % Meets Grade Level or Above
Reading
35.0%
TX avg 54.5% . +26.0pp since 2020
Mathematics
22.0%
TX avg 45.3% . +19.0pp since 2020

What this means: On the STAAR, Texas's statewide test, about 35 of every 100 students at this school read at grade level and about 22 of 100 do math at grade level. Across all Texas schools, those numbers are about 55 and 45. Reading scores are up about 26 points since 2020, while math scores are up about 19 points.

Performance levels, 2025-26

SubjectMasters Grade LevelMeets Grade LevelApproaches Grade LevelDid Not Meet Grade Level
Reading3.0%32.0%26.0%39.0%
Mathematics6.0%16.0%53.0%25.0%
Share of tested students at each STAAR level. Each student counts in one level, so a row adds to about 100%.

STAAR results by year

School yearReadingMathematics
2025-2635.0%22.0%
2024-2528.0%9.0%
2023-2422.0%8.0%
2022-2314.0%11.0%
2021-229.0%11.0%
2020-219.0%3.0%
% Meets Grade Level or Above, all students and all tested grades.
Source: STAAR. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
24.6%
composite math + reading, all grades
Predicted
34.4%
based on TX schools with similar FRL share
Beats by
-9.8pp
below demographic expectation

What this means: About 25% of students here test proficient in math and reading, compared with the roughly 34% typical for Texas schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Texas's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Mercedes High School

Mercedes High School's state test result (24.6% proficient) is higher than 0 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Mercedes High School this school90392.0%24.6%
IDEA College Preparatory Mission
MISSION
79891.0%45.1%
John F Kennedy High School
SAN ANTONIO
99892.5%26.3%
YES Prep - Northline
HOUSTON
1,00490.7%51.6%
IDEA North Mission College Preparatory
MISSION
75692.2%55.7%
IDEA College Preparatory Pharr
PHARR
84894.0%49.3%
Matched among Texas high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Mercedes High School ranks

Among high schools
MeasureThis schoolIn TexasIn Hidalgo County
State test proficiency
ranked highest first
24.6%#1,371 of 1,385#56 of 56
Math proficiency
ranked highest first
22.0%#1,277 of 1,425
▲ 128
#52 of 56
▲ 4
Reading proficiency
ranked highest first
35.0%#1,327 of 1,425
▲ 37
#51 of 56
▲ 5
3-year test score change
ranked biggest gain first
+16.0pp#571 of 1,184#15 of 56
Enrollment
ranked largest first
903#628 of 2,107#26 of 84
Students per teacher
ranked fewest first
14.8:1#700 of 1,344#32 of 56
Diversity index
ranked most diverse first
4.6%#1,276 of 1,346#28 of 56
Free and reduced lunch
ranked highest share first
92.0%#141 of 1,522#30 of 65
Enrollment change since 2017-18
ranked steepest decline first
-17.6%#133 of 557#5 of 31
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
903
-116 (-11%) vs 2020
+13% since 1990-91, when it was 802
Student : Teacher
14.8:1
was 14.3:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2590360.914.8:192% (831)
2023-2489569.112.9:191% (817)
2022-2397471.213.7:191% (887)
2020-211,0197114.3:192% (935)
2017-181,09687.412.5:186% (944)
2015-161,1098113.7:183% (915)
2010-111,1448912.8:10% (0)
2000-011,1449112.6:169% (793)
1990-918027710.4:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mercedes High School.

Since 2017-18: students down 18% (1,096 to 903); teachers down 30% (87.4 to 60.9).

About Mercedes High School

Mercedes High School is a mid-sized high school in MERCEDES, Texas, administered by MERCEDES ISD. The school offers grades 9 through 12 and enrolls 903 students.

MERCEDES ISD has 11 schools and 4,207 students, and Mercedes High School is one of those schools.

Mercedes High School is 98% Hispanic by enrollment. On the diversity index, which measures the chance that two random students are from different groups, Mercedes High School scores 5%.

Teacher count: 60.9 full-time equivalents. Student-to-teacher ratio: 14.8:1. The average ratio among high schools in Texas is similar, at 15.1:1. Eligibility for free or reduced-price lunch, often used to gauge student poverty, is 92%.

Mercedes High School holds an F allk12 Grade, placing it above 4% of Texas public high schools.

Test results at Mercedes High School are 9.8 points below what its free or reduced-price lunch share predicts (24.6% actual, 34.4% predicted).

The school is in Hidalgo County, where median household income comes to about $54,338, 21% of adults hold a bachelor's degree or higher, and about 23% of residents live below the federal poverty line. Hidalgo County counts 364 public schools with about 212,859 students.

Among nearby public schools, Travis Elementary School is closest at about 0.6 miles. In all, at least 8 other public schools sit within five miles of Mercedes High School. By average proficiency, Mercedes High School is 4th among 5 schools close by.

Federal records code the school's setting as Suburb: Large.

The 2020-21-to-2024-25 change in enrollment was an 11% decline, from 1,019 to 903.

This page collects posts and questions about Mercedes High School, such as open houses, carpools, and field trips. Current and former families are welcome to add their experience.

Hidalgo County at a glance

View full county profile
Population
891,977
Census ACS
Median income
$54,338
Household, ACS
Bachelor's+
21%
Adults 25+
Poverty rate
23%
Below federal line
Schools in county
364
212,859 students

Quick facts

School name
Mercedes High School
District
MERCEDES ISD
Address
1200 S FLORIDA, MERCEDES, TX 78570
Phone
(956) 514-2100
County
Hidalgo County
Level
High
Grade range
09–12
Total enrollment
903
Teachers (FTE)
61
Student–teacher ratio
14.8:1
Free and reduced lunch
831 (92%)
Locale
21-Suburb: Large
NCES ID
483025003388
Charter school
No
Virtual school
No

Related schools

Other schools in MERCEDES ISD
Other schools in MERCEDES
Nearby schools

Frequently asked questions

About Mercedes High School
How many students attend Mercedes High School?
Mercedes High School enrolls approximately 903 students in grades 09-12.
What grades does Mercedes High School serve?
Mercedes High School serves grades 09-12.
What is the student-teacher ratio at Mercedes High School?
The student-to-teacher ratio at Mercedes High School is approximately 14.8:1 (61 FTE teachers).
How diverse is Mercedes High School?
Mercedes High School reports a student body of 2% White, 98% Hispanic, 0% Black, 0% Two or more.
Who oversees Mercedes High School?
Mercedes High School is overseen by MERCEDES ISD in Hidalgo County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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