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Best Public Schools in Zip Code 78548

Summary:

Zip code 78548 in Grulla, Texas, is home to two schools—Grulla Elementary (grades PK-5) and Grulla Middle (grades 6-8)—both part of the Rio Grande City Grulla Independent School District (ISD), serving about 1,046 students in a community where over 94% of students face economic disadvantage.

Grulla Elementary stands out as the stronger overall performer, consistently earning a 4-star rating and excelling in Mathematics—where 74% of 4th graders and 62% of 5th graders scored proficient, well above state averages. Its 5th-grade Science scores also dramatically outpaced the district and state. In contrast, Grulla Middle shows a "two-tier" academic system: while general Math scores lag behind state averages, its advanced Algebra I program achieves near-perfect proficiency (91-100%), far exceeding district and state levels. The middle school has also improved its state ranking from the 27th to the 48th percentile over two years and maintains a 0% dropout rate.

Key takeaways for parents: Both schools offer favorable student-teacher ratios (13.7:1 at elementary, 10.9:1 at middle), with higher per-student spending at the middle school ($13,176 vs. $11,125). Reading proficiency is a consistent challenge across grade levels, though 4th-grade Reading at the elementary school (65.5%) exceeds the state average. The elementary school’s strong Math and Science foundation appears to feed into the middle school’s advanced Algebra track, creating a pipeline for high achievers. Despite significant socioeconomic hurdles, these schools demonstrate resilience and targeted academic strengths, particularly in STEM subjects.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores All

School													Students/Teachers											Ranking ()				Ranking ()
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score ()	Statewide Rank ()	State Percentile ()	SchoolDigger Rating ()	Average Standard Score ()	Statewide Rank ()	State Percentile ()	Rank Change from Previous Year

Cities Near Zip Code 78548

City	Distance	# of Schools	Statewide Rank
Grulla	0.63 mi	2	304^th
Rio Grande City	2.59 mi	19	300^th
Sullivan City	5.29 mi	2	649^th
Garciasville	6.24 mi	1	807^th
La Joya	10.06 mi	8	541^st

See the top TX Texas cities

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Texas Education Agency.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.