This study investigated university teachers' characteristics and their influence on teaching practices: Coming from expectancy-value theory, teachers' personal value of teaching was introduced as a possibly relevant variable and examined along with constructivist and transmissive teaching beliefs as to how they affect various aspects of university teaching. The sample consisted of 79 university teachers, whose data were combined with the teaching assessment of 2552 students enrolled in their courses and of external observers. Multiple regression analyses showed that value of teaching affected observed structuring, student active involvement, and rapport. Transmissive beliefs impacted the observed quality of instruction, and constructivist beliefs were positively related to student-reported clarity of instruction, the stimulation of student involvement, and rapport. Notably, the predictors displayed a data source specific result pattern. As potential reasons for the link between student-reported variables and constructivist beliefs a general factor in the students' assessment and a survivor bias associated with teachers' constructivist beliefs are discussed.