The reported proficiency rate for English language arts is 47%.
Original Research by School Decision on Guillermo Flores El
Guillermo Flores Elementary is a public school in Mission serving prekindergarten through fifth grade. The campus enrolls a small to medium-sized population across its grade levels, drawn almost entirely from Hispanic families in the immediate area. Nearly all students qualify for free or reduced-price lunch, reflecting the economic profile of the community Mission serves.
In English language arts, where the school has state testing data, proficiency results show a trajectory upward through the grades. Third-grade students tested at a moderate level; fourth-grade proficiency was comparable; fifth-grade students performed somewhat stronger. Math proficiency data for grades three and four are incomplete, released in forms that prevent reporting specific results, though overall proficiency measures across all subjects suggest the school's math performance trails its English results. Science testing was administered only to a fifth-grade cohort too small to yield usable proficiency figures.
The school's overall proficiency index across tested subjects and grades places it in the top quartile among elementary schools across Hidalgo County's districts, a meaningful distinction given the county's demographics and resources. This standing reflects particular strength in English language arts relative to the county average and suggests the school is advancing student learning despite serving a high-poverty enrollment.
A parent considering this school should know the broader context: La Joya ISD, the district that operates Guillermo Flores, has been under state control since February 2024 after a Texas Education Agency investigation substantiated fraud and conflicts of interest by the prior elected board. That governance structure is set to remain in place through early 2028. In January 2026, the state-appointed board voted to close three other elementary schools and two middle schools, reassigning students to higher-performing campuses and modifying school zones effective in the 2026-2027 school year. The consolidation stems from a substantial enrollment decline across the district over the past decade. Guillermo Flores itself is not among the schools scheduled for closure, and the board stated the reassignments move students toward higher-rated schools.
Housing in Mission is relatively affordable. The median home value is substantially below the Texas and national benchmarks, and rental costs align with local incomes, making the area accessible for families seeking lower housing cost burden. The community is young, with a median age noticeably below the national average, and employment centers on health care, retail, and education. The McAllen-Edinburg-Mission region is forecast to add jobs over the next five years, though border-region economic challenges affect the outlook.
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