This document summarizes a presentation given by Amanda Brown and her graduate students on the state of research regarding effects of program type, teacher personality, and language background on second language classrooms. The presentation covered comparisons of standard, intensive, and immersion language programs; the role of teacher personality; and a review of student and teacher perceptions of non-native English speaking teachers. While research on some topics like the impact of personality is inconclusive, intensive programs appear more effective than standard, and both students and teachers perceive benefits and limitations to non-native teacher status.