1.   The students are complaining about chronic overcrowding in the faculties and overflowing lecture halls.

2.   The students are complaining in particular about overcrowding in the faculties and overflowing lecture halls, saying the poor quality of French university education is affecting their job prospects.

3.   The students are complaining against chronic overcrowding in the faculties and overflowing lecture halls.

4.   The students were complaining about chronic overcrowding in the faculties and overflowing lecture halls, saying the poor quality of French university education is affecting their job prospects.

5.   Students are complaining in particular about overcrowding in the faculties and overflowing lecture halls, saying the poor quality of French university education is affecting their job prospects.