Table 1. Student background.

Feature	Description	Value
sex	Gender of student	Male or Female
age	Age of student	15–22
school	School of student	Gabriel Pereira or Mousinho da Silveira
address	Type of student’s home address	Urban or Rural
famsize	Size of family	≤3 or >3
Pstatus	Parent’s cohabitation status	Living together or apart
Medu	Education of parents	None, Primary education, 5 th to 9 th grade, Secondary education, Higher education
Fedu
Mjob	Job of parents	At home, Civil services, Teacher, Healthcare related, Other
Fjob
reason	Reason to choose the school	Close to home, School reputation, Course preference, Other
guardian	Guardian of student	Father or mother, Other