Abstract: Industrial Science (SI) is the mandatory subject for the students majoring in Physique, Sciences de l'Ingénieur (PSI) in preparatory school in France, and a reference to be considered when applying for Grand Ecole. The examination includes two independent sessions:lecture and practical work. During the four hours of practical work test, the candidates should focus on a specific topic, and finish the analysis, computation, simulation, test and oral presentation using the experimental devices. The mark will be given based on their ability of understanding and resolving complex industrial problem, and the ability of technical communication shown during the period of the test. This evaluation method was immigrated and applied in the SI experiments in our school for several years. It has been proved that the integrative ability of students on practical work can be evaluated effectively; the criteria of assessment can be a reference on the reform of the experiment courses and practical work evaluation.