The aim of this study is to evaluate the analytical skills of students in the 4th year of pharmacy regarding compliance with GMP (Good Manufacturing Practices) in a professional and real-world environment. For the activity, students were placed into different groups in order to audit a number of pharmaceutical companies in terms of the GMP. Procedures for carrying out the activity and a proposal for an assessment were established. The results obtained show that approximately 97.1% of the students passed this activity, with a minimum mark of 6.25 (out of 10) and with an average score of 8.23 . It has been shown that students who carried out this activity achieved higher final marks in the subject.