You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League: MHSAA 6A-4       (MS64) (ID: 1a11m) (Sort: Div) (Playoffs: 4)
    Team: Biloxi                  (ID: t1hfz)
    Team: D'Iberville             (ID: t1hg0)
    Team: George County           (ID: t1hg1)
    Team: Gulfport                (ID: t1hg2)
    Team: Hancock                 (ID: t1hg3)
    Team: Harrison Central        (ID: t1hg4)
    Team: Ocean Springs           (ID: t1hg5)
    Team: St. Martin              (ID: t1hg6)
  Kind: high school
  Sport: football
  Gender: male
  Country: USA
  State: MS
  Level: 1A
  Season: 2015 (current: True)
  Author: PMC
  Note: None.
  LotteryNote: 
LeagueEnd

SortBegin
Div: Wins, IfSomeTiesBrokenReturnHere, Wins HeadToHead, Wins
SameParent,Wins CommonOpponent, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  0.5
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.56
  WeightType:  Pythagorean
  WeightExponent:  2.37
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Playoffs
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  relegated
  Demote:  0
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
9/25/15    Biloxi             17-35   D'Iberville        (ID: g1n2p1)
9/25/15    Gulfport           28-10   St. Martin         (ID: g1n2pe)
9/25/15    Harrison Central   55-26   George County      (ID: g1n2qh)
9/25/15    Ocean Springs      17-13   Hancock            (ID: g1n2qd)
10/2/15    Biloxi                     Harrison Central   (ID: g1n2qi)
10/2/15    D'Iberville                Ocean Springs      (ID: g1n2qj)
10/2/15    George County              Gulfport           (ID: g1n2qk)
10/2/15    Hancock                    St. Martin         (ID: g1n2q7)
10/9/15    D'Iberville                George County      (ID: g1n2q4)
10/9/15    Gulfport                   Hancock            (ID: g1n2q5)
10/9/15    Ocean Springs              Biloxi             (ID: g1n2qm)
10/9/15    St. Martin                 Harrison Central   (ID: g1n2qg)
10/16/15   George County              Ocean Springs      (ID: g1n2qn)
10/16/15   Gulfport                   Harrison Central   (ID: g1n2qp)
10/16/15   Hancock                    D'Iberville        (ID: g1n2qq)
10/16/15   St. Martin                 Biloxi             (ID: g1n2q2)
10/23/15   Biloxi                     George County      (ID: g1n2qr)
10/23/15   D'Iberville                Gulfport           (ID: g1n2qs)
10/23/15   Harrison Central           Hancock            (ID: g1n2qt)
10/23/15   Ocean Springs              St. Martin         (ID: g1n2qu)
10/30/15   D'Iberville                Harrison Central   (ID: g1n2qb)
10/30/15   George County              St. Martin         (ID: g1n2q3)
10/30/15   Gulfport                   Ocean Springs      (ID: g1n2qv)
10/30/15   Hancock                    Biloxi             (ID: g1n2qw)
11/6/15    Biloxi                     Gulfport           (ID: g1n2q6)
11/6/15    George County              Hancock            (ID: g1n2qx)
11/6/15    Harrison Central           Ocean Springs      (ID: g1n2q1)
11/6/15    St. Martin                 D'Iberville        (ID: g1n2qa)
GamesEnd