Summary:
This analysis examines four high schools in the 78582 zip code (Rio Grande City, TX), serving grades 9-12 with a combined enrollment of about 3,511 students in a community facing significant economic challenges.
The standout school is Preparatory For Early College High School, which ranks in the top 15-18% of Texas high schools despite having the highest poverty rate (98.6%) and lowest per-student spending ($8,777). It dramatically outperforms both its district, Rio Grande City Grulla Independent School District (Isd), and state averages in every subject, with 84% proficient in Biology versus 56% district and 71% state. In contrast, the two traditional comprehensive schools—Rio Grande City High School and Grulla High School—rank in the bottom 25-30% of Texas high schools, consistently scoring below state averages. The charter school Idea Rio Grande City College Preparatory (part of Idea Public Schools) is a solid 3-star performer, often meeting or exceeding state averages in core subjects like English and Biology.
A key finding is that money does not equal success: the highest-spending school (Grulla at $14,515/student) is low-performing, while the lowest-spending school (Preparatory for Early College at $8,777/student) is the top performer. All schools report 0% dropout rates and graduation rates between 97.7% and 100%, yet there is a stark disconnect—most students at the two largest schools are not proficient in core subjects, suggesting students may be passed through without mastering material. Additionally, English Language Arts is a district-wide weakness, with even the high-performing Early College school scoring below its own Biology and U.S. History results.
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