Composite Ranking teams from 2004 through 2018 using the RPI Method

For the period 2004 through 2018 the RPI or ratings percentage index method was used to determine the ranking of teams in 
all three divisions of men and women's lacrosse. The 16 year period was treated as one season and the the RPI calculation
was based on all games played in those 16 years. Consistent with ths calculation, the SOS or Strength of Schedule method
was used for the entire 16 year period and a ranking of teams based on difficulty of schedule was computed. Finally, 
based on the RPI results, a QWF or Quality Wins and Losses Factor calculation was performed to determine the ranking of 
teams in order of quality wins (and losses).  A discussion of these methods demonstrates that only wins and losses matter and 
goal margin of difference or scores for that matter of games do not. 

There are many arguments for and against the use of the RPI method, however, since the NCAA relies on it and since if makes
up the core criteria for selecting and seeding teams in the NCAA tournaments, the results carry significance. Finally, the
methodology was applied to other non-varsity college leagues including MCLA and WCLA. The data was obtained from Laxpower. 

The top 5 teams in each division are as follows:

Men's Division I:
1. Syracuse
2. Duke
3. Johns Hopkins
4. Maryland
5. Virginia

Men's Division II:
1. LeMoyne
2. Limestone
3. NYIT
4. Mercyhurst
5. LIU Post

Men's Division III:
1. Salisbury
2. Cortland
3. Tufts
4. Gettysburg
5. RIT

Women's Division I:
1. Maryland
2. Northwestern
3. North Carolina
4. Duke
5. Florida

Women's Division II:
1. Adelphi
2. LIU Post
3. Forida Southern
4. LeMoyne
5. Westchester

Women's Division III:
1. Salisbury
2. College of New Jersey
3. Gettysburg
4. Middlebury
5. Franklin and Marshall

MCLA and WCLA results are found below:

Complete results for Men's Division I RPI are listed here.
Complete results for Men's Division II RPI are listed here.
Complete results for Men's Division III RPI are listed here. 
Complete results for Women's Division I RPI are listed here.
Complete results for Women's Division II RPI are listed here.
Complete results for Women's Division III RPI are listed here. 
Complete results for MCLA Division I RPI are listed here.
Complete results for MCLA Division II RPI are listed here. 
Complete results for WCLA Division I RPI are listed here.
Complete results for WCLA Division II RPI are listed here.
Complete results for JUCO Men's RPI are listed here.
Complete results for JUCO Women's RPI are listed here.  

For a complete breakdown for each and every year from 2004 to 2018 for all division's listed above and for RPI, SOS and QWF, 
visit here.