The purpose of this study is to gain insight in the development of student knowledge in PVSE-schools that differ in the way and extent in which they are implementing characteristics of competence-based education. The implementation of these characteristics was examined by means of a questionnaire.The development of student knowledge was investigated by means of the concept mapping method in the course of which a pretest was compared to a posttest. When looking at the general typifications of the learning environments the students were in, students developed slightly more knowledge in learning situations which corresponded less with the characteristics of competence-based learning environments. Student guidance and accompanying variables appeared to be distinguishing characteristics for the development of student knowledge. Students developed more knowledge in learning situations in which guidance was combined with students' self-direction and in which all forms of guidance were often provided during the whole educational trajectory.