A significant portion of the brevet mark is set by the school before exam day, and that is what students notice latest.
What is examined
Not individual subject grades but the competences acquired across lower secondary school. Those competences are grouped under defined domains: use of language, methods and tools, living together, natural and technical systems and so on.
Each domain is assessed at a level and those levels are converted into marks.
Who assesses
Teachers, through observation and assessment across the year. This is not the result of a single test; it is an accumulated judgement.
So participation in lessons, submitted work and classroom activity convert directly into marks.
Why it cannot be changed in the final month
The assessment accumulates through the year and closes on a set date. Work done after that date does not appear in this component.
A student who starts three months before the exam therefore begins having already lost part of the mark.
Where a family can see it
The tracking system the school uses shows these assessments. Looked at during the year, a weak domain can be identified and corrected.
Looked at at the end of the year, only the result is visible.
A note for francophone students
The use of language domain is the weakest one for a student who does not speak French at home, and it is a separate item from the French paper in the exam.
So the same weakness costs marks in two places at once, and knowing that at the start of the year makes it manageable.