I've visited SST many times and talked with parents. My experience is positive and though one parent expressed concern about difficulties their child experience, the parents also praised the teachers and administrators for working closely with them to resolve the problem. This high school consistently ranks in the top ten of all high schools in San Antonio. The small size and STEM focus make it a great option for many students. AND it's tuition free.
This school has received multiple awards every year for how effective its program is. Simply go to the school's official website and see the news of the latest awards it has received. Everything from best school based on SAT scores to Gold Medal in working with students at risk. Students are also earning millions in scholarships every year as evidence of the effectiveness of the teachers.