Measurement occurred at baseline, at three months and at a six months follow-up. Measures included blood pressure, total cholesterol, height/weight, waist and hip circumference, 24-hour dietary recall, SLT-based knowledge, attitude and behavior variables, the Comprehensive Adult Student Assessment System (CASAS) Life Skills Reading Test and Spanish literacy through the Cloze technique. All self-report measurement except the CASAS was conducted in English or Spanish, primarily through oral interview. SLT knowledge, attitude, and behavioral measures of instructors in study and non-study classes were also assessed.