28 teams, divided into 2 groups of 14 teams each (Serie 1 and Serie 2) on regional basis.
Each team plays against all the teams from its own group twice - home and away - for a total of 26 games each, over 26 game weeks.
3 points for a win, 1 point for a draw, 0 points for a loss.
1. points won; 2. total goal difference; 3. games won; 4. points in head-to-head matches; 5. goal difference in hth matches; 6. goals scored in hth matches; 7. play-off.
Relegation to the league:
2 teams from Promotion d'Honneur
2 more teams from Promotion d'Honneur possible to relegate through Play-offs 2/3
Promotion from the league:
1 place of each group: promoted to Promotion d'Honneur
2 place of each group: enter Play-offs 2/3 with two Promotion d'Honneur teams for 2 places in Promotion d'Honneur
Relegation from the league:
12-14 place: relegated to 2. Division
Promotion to the league:
6 teams from 2. Division