This study examined relationships between student perceptions of teaching behavior and learning outcomes in college biology. One-hundred one students who enrolled in an introductory college biology course reported the frequencies of 20 overt, in-class teaching behaviors exhibited by the instructor and rated the instructor on 12 measures of teaching effectiveness. Achievement tests were administered periodically throughout the two-semester time interval. A series of simple correlations between teaching behavior factors and both achievement and student ratings revealed a complex pattern of relationships. Moderately strong relationships were found between student perceptions of “information-transmitting” behaviors and achievement, while generally stronger relationships linked behavior factors with student ratings of teaching effectiveness.