Summary:
In zip code 75238, there is one high school, Lake Highlands High School, serving grades 9 through 12 with a substantial enrollment of 2,972 students as part of the Richardson Independent School District (Isd).
Lake Highlands High School shows a clear split in academic performance. The school’s strongest subject is U.S. History, where 72.78% of students were proficient in the 2025-2026 school year, slightly outperforming the state average. However, the school struggles significantly in Algebra I, with only 17.13% of students proficient—a rate dramatically lower than both the district (43.89%) and state (54.03%) averages. Performance in Biology and English I and II Reading falls below district and state averages, but the gaps are much smaller than in math. The school’s graduation rate is 86.2%, below the district average of 90.0%, and its dropout rate is 3.0%, above the district’s 2.3%. Over half of the students (50.84%) qualify for free or reduced lunch, and the school has a student-teacher ratio of 14.7:1 with spending of $9,559 per student.
The most critical takeaway is the Algebra I crisis, which appears to be a primary driver of the school’s consistent 2-star state ranking (42nd to 46th percentile over three years). This severe underperformance in math contrasts sharply with the school’s relative strength in U.S. History, suggesting subject-specific instructional challenges. The below-average graduation rate and above-average dropout rate align with these academic struggles, as Algebra I is a key gatekeeper course for graduation. Without targeted intervention in mathematics, the school seems unlikely to improve its overall standing.
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