New students: these students start their studies from the beginning and for the first time. They may have recognised credits or not.

New SIIU students: these students start their studies from the beginning, registering on a programme for the first time and, in accordance with SIIU criteria, may have fewer than 10 (for a Master's) or 30 (for an undergraduate programme) recognised credits. This set of students may also be referred to as the optimum new entry group. 

Registered students: these students are actively registered on a programme for an academic year. This set of students may also be referred to as the total student population, where registration reservations or cancellations, as well as students with outstanding debts, are not included.

Graduates: these students have passed (passed or accredited) all credits required for a degree programme and, therefore, finished their course regardless of whether they have requested their degree certificate be issued or not.

Success rate: the percetage ratio between the number of passed credits and the number of credits taken for assessment.

Performance rate: the percentage ratio between the number of credits passed and the number of credits registered for.

Student, PDI and PAS satisfaction levels are rated on a scale of 1 to 4, where 1 means ‘not at all satisfied’ and 4 means ‘very satisfied’. They are obtained from the following surveys:

• Survey of student satisfaction with the study programme (yearly)
• Survey of satisfaction and identification of needs of teaching and research staff (PDI) (yearly)
• Biennial survey of satisfaction and identification of needs of administrative and service staff (PAS) who have supported undergraduate and postgraduate studies.

Only the data that meet a double criterion of representativeness have been considered valid: on one hand, reaching 4 answered surveys and, on the other hand, that the number of answered surveys is equal to or greater than 15% of the population