The Scottish Professional Football League was formed on June 27, 2013 when The Scottish Football League and The Scottish Premier League merged to create a single new body to govern the 42 league clubs in Scotland.
Scottish Premiership: The 12 clubs play 38 matches, with a split into a top and bottom six after 33 games. At the end of the season, the bottom club is relegated while the club in 11th place will face the Championship play-off winners over two legs.
Scottish Championship:The 10 clubs play 36 matches. The champions are promoted to the Premiership and clubs in 2nd, 3rd and 4th enter two-legged play-offs. The winner of 4th v 3rd plays 2nd, with the winner of that tie up against the club finishing 11th in the Premiership. The bottom club is automatically relegated and the 9th-placed club goes into a play-off with the 2nd, 3rd and 4th placed clubs from the League One.
Scottish League One:The 10 clubs play 36 matches and the champions are promoted to the Championship. Clubs in 2nd, 3rd and 4th enter the play-offs, along with the club finishing ninth in the Championship.
Scottish League Two: The 10 clubs play 36 matches and the champions are promoted to League One. Clubs in 2nd, 3rd and 4th enter the play-offs, along with the club finishing ninth in League One.