sentences:  In high school, if a student, at the end of the year, reports an insufficient grade average in a certain subject (5 or below), he or she has to take a reparatory exam in September, before school begins; if the result of the reparatory exam is again not sufficient, the student cannot pass to the next year and will have to repeat it.A student who, at the end of the year, has more than 3 insufficient subjected will not pass to following class and will have to repeat the year.This is anyway subject to the judgment of professors, who can evaluate what to do according to the case.