Summary:
Zip code 78070 in Spring Branch, Texas, is home to a single high school, Smithson Valley High School, which serves grades 9 through 12 with a substantial enrollment of 2,098 students within the highly-rated Comal Independent School District (Isd).
Smithson Valley High School is a standout performer, earning a 5-star rating and ranking 150th out of 2,009 Texas high schools (93rd percentile) for the 2025-2026 school year. This marks a significant improvement from a 4-star rating just two years prior. The school consistently outperforms both district and state averages on STAAR End-of-Course exams, with particularly strong results in Biology (92% proficient) and English I Reading (85% proficient). Its graduation rate is an impressive 97.6%, with a dropout rate of just 0.1%.
One notable finding is the "Algebra I Anomaly": while the school beats the state average in Algebra I (61.2% proficient), it falls behind its own district average (69.5%), a contrast to every other subject where the school leads. The school serves a predominantly affluent student body, with only 14.4% of students qualifying for free or reduced lunch, and maintains a reasonable student-teacher ratio of 15.4:1. With spending per student at $7,993, the school demonstrates strong academic outcomes in a low-need environment, making it a top choice for families in the area.
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