Summary:
Zip code 78009, serving the Castroville area, is home to a single high school, Medina Valley High School, which serves grades 9 through 12 as part of the Medina Valley Independent School District (ISD).
Medina Valley High School is a large school with 2,626 students and a student-teacher ratio of 18.3:1. The school demonstrates notable academic strengths in science and history, with 77.76% of students proficient in Biology and 77.61% in U.S. History, both significantly above state averages. It also maintains a high graduation rate of 94.2% and a very low dropout rate of 0.7%. However, the school faces a significant challenge in Algebra I, where only 41.86% of students are proficient, well below the state average of 54.03%. This creates a stark contrast between its strong performance in humanities and sciences and its weakness in foundational math. Additionally, the school's state ranking has declined from the 78th percentile (4 stars) in 2023-2024 to the 63rd percentile (3 stars) for 2025-2026, indicating a recent dip in overall academic achievement metrics.
For parents, Medina Valley High School offers a supportive environment with strong student retention and excellent performance in several core subjects. The low Algebra I proficiency is a key area of concern that may require additional support for students. The recent decline in state ranking suggests the school is facing challenges that may be worth discussing with administrators. Overall, the school provides a solid educational foundation with clear areas of excellence and one notable area for improvement.
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