Summary:
The Dilley Independent School District (Isd) is home to a single high school, Dilley High School, a small rural institution serving 258 students in grades 9-12.
Dilley High School presents a complex picture for parents. On one hand, the school boasts a very high graduation rate of 94.4% and an extremely low dropout rate of 0.4%, indicating that nearly all students stay in school and earn their diplomas. The school also invests heavily in its students, with a low student-to-teacher ratio of 9.5:1 and a high per-student spending of $15,600, suggesting small class sizes and significant resources. However, academic performance on state tests is a major concern. The school has consistently ranked in the bottom 15% of Texas high schools, and proficiency rates in core subjects like Algebra I (40.82%), Biology (44.9%), and English I Reading (31.58%) are all well below state averages. This creates a "graduation vs. proficiency" paradox where students are moving through the system but many are not mastering grade-level material.
There are some bright spots worth noting. Between the 2024-2025 and 2025-2026 school years, Algebra I proficiency saw a dramatic increase from 8.47% to 40.82%, and Biology also improved significantly. If sustained, this could signal a positive turnaround. However, U.S. History remains a critical weakness, with the school trailing the state average by nearly 33 percentage points. Overall, while Dilley High School excels at keeping students enrolled and graduating, parents should be aware that the school faces significant challenges in ensuring students are academically prepared for college or careers, despite its strong resource allocation.
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