Basis San Antonio - Jack Lewis Junior Campus

Basis San Antonio - Jack Lewis Junior Campus is a small, high-performing public charter middle school in San Antonio, TX, serving 181 students in grades 6-8 as part of the highly-ranked Basis Texas district.

This school stands out for its exceptional academic performance, often doubling or tripling the proficiency rates of nearby traditional public schools. For example, in mathematics, Basis San Antonio achieves 44% to 86% proficiency across grades 6-8, while the nearest competitor, Briscoe Middle, ranges from just 13% to 46%. The school also excels in advanced coursework, with 100% of students passing Biology and 94% passing English II End-of-Course exams—scores that far exceed state averages and are rarely offered at other middle schools. Notably, Basis San Antonio is exceptionally effective with students from low socioeconomic backgrounds, ranking in the 97th percentile statewide for this subgroup, which is a massive outlier compared to schools like Pease Middle or Vale Middle, where overall math proficiency often falls below 10%.

Despite its elite status, there are a few nuances to consider. The school’s overall state ranking has dipped slightly from the 91st to the 85th percentile in recent years, and 8th-grade Social Studies scores are surprisingly low at just 21.8% proficient—below the state average. However, its small size (roughly one-fifth the size of nearby schools like Luna Middle or Briscoe Middle) allows for a personalized, rigorous environment that adds significant value for all students, including African American and low-income learners. This makes Basis San Antonio a standout choice for families seeking a college-preparatory education in a community where educational outcomes vary widely within a 3-mile radius.