D−
SGT William G Harrell Middle
PublicMiddleGrades 6–8
2825 N FM 491, Mercedes, TX 78570 · (956) 514-2300 · Part of Mercedes Independent School District
Students
390
Students per teacher
13:1
Free or reduced lunch
98%
Setting
Rural
Grades
6–8
What stands out about SGT William G Harrell Middle
- School Grade D−: test results are near the bottom of the state
- Math proficiency 31 pts below the state
- Reading / language arts 24 pts below the state
- Enrollment down 27.5% since 2020
- Next stop for Relampago kids: Mercedes H S
On the path
Where Relampago kids come from and go next.
PK–54 elementary schoolsDepends on your address
6–8SGT William G Harrell MiddleYou are here
10–12Mercedes H Sin Mercedes
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency6%
State average 36.6%
Reading / language arts18%
State average 41.8%
Location
Directions ↗
2825 N FM 491, Mercedes
Students
Enrollment by grade
Grade 6133
Grade 7111
Grade 8146
Enrollment over time
538’20
488’21
451’22
388’23
390’24
Down 27.5% since 2020.
Who goes here
Hispanic 97%White 3%Black <1%American Indian/Alaska Native <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention SGT William G Harrell Middle.
Other schools in Mercedes Independent School District
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.