This paper describes the process evaluation of an organ donation education program for high school students aged 15-18 years of which the effectiveness was established. The program consisted of three components: a video with group discussion, an interactive computer-tailored program and a registration training session. A cross-sectional survey was conducted among 50 teachers who had recently worked with the program. The results show that all teachers reported to have implemented at least two of the three intervention components, while a majority of teachers reported to have implemented all components. Teachers' attitudes toward the program were generally positive. They reported that the opinions of students and colleagues in their own department were most influential in their decision to provide the education program. Furthermore, teachers were very confident about their ability to apply the different parts of the education program. The educational quality of the program was evaluated as moderately positive and almost all teachers had the intention to use the program again in the future. Because of the positive evaluations and intentions for future implementation by teachers, and justified by its previously established effectiveness, the education program should be considered for large-scale dissemination among high schools in The Netherlands. (Contains 5 tables.)