The league is composed of 28 teams divided into two geographic divisions of 14 teams each. Teams contest other teams within their own division: once at home and once away for a total of 26 matches each.
In each division, the top two teams are promoted to Azadegan League, and the bottom two teams are relegated to Iran Football's 3rd Division plus the relegation playoff loser. In total, the league promotes 4 teams to Azadegan League and relegates 9 teams to 3rd Division.
Updated to match(es) played on 17 April 2013 (2013-04-17). Source: Foolad FC Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (P) Promoted; (R) Relegated
Updated to match(es) played on 17 April 2013 (2013-04-17). Source: Foolad FC Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (P) Promoted; (R) Relegated Notes: