EdISU assigns College placements to students enrolling at the University of Pavia based the examination at the end of the pre-University Course (> 70/100) and on family income. For confirmation of College placements in higher years, EdISU uses a credit system. The system, popular at a number of Universities, assigns a total number of credits to each year of study (typically 60, although there are many exceptions to the 60 rule in Pavia) and a score to each examination or training period. Confirmation of College placements of undergraduates and students of MSc Courses in year 2 or higher requires that a minimal number of credits, is achieved. Other categories of College students are assessed differently. These include PhD students, postgraduate medical students and postdoctoral fellows who are assessed through an annual written report. In contrast diploma students, for example the 2 year IUSS/IST Course in Construction Science, are assessed externally.