18 teams, each plays the others twice - home and away - for a total of 34 games each, over 34 game weeks.
3 points for a win, 1 point for a draw, 0 points for a loss.
1. points won; 2. points in head-to-head matches; 3. goal difference in hth matches; 4. goals scored in hth matches; 5. away goals in hth matches (only if two teams are tied); 6. total goal difference; 7. total goals scored; 8. fairplay ranking.
Relegation to the league:
2 teams from Ekstraklasa
Promotion from the league:
1-2 place: promoted to Ekstraklasa
Relegation from the league:
15 place: enters Play-offs 2/3 with one II Liga team for 1 place in I Liga
16-18 place: relegated to II Liga
Promotion to the league:
3 teams from II Liga
1 more team from II Liga possible to promote through Play-offs 2/3