The NCAA invites teams to their championship tournaments based on 
the Ratings Percentage Index(RPI), Strength of Schedule(SOS) and
Quality Wins and Losses(QWF). College lacrosse uses these factors
for selections as well as seeding teams for the tournament. What if
we applied the same criteria to high school lacrosse tournaments?

This is precisely what this page is all about

An explanation of the methodology and how teams are selected can be
found here. Only games played within group are included in the calculations.
The probability for advancing is based on a formula which
weighs the RPI, SOS and QWF team calculation. Probabilities are
measured in percentage (100.0% = maximum).
Each team has a probability for (a) being invited, (b) advancing
to the final 16, (c) quarterfinals (8), (d) semifinals (4), (e) finals
(2) and (f) becoming champion (1).
The results are updated daily as the season progresses and more game
scores are available to predict more accurate results. IN TOTAL CURRENT Probabilities (%) Rnk Team Name Conference W L W L RPI SOS QWF Championship 1 Worcester State CLC D3 6 0 6 3 1 7 1 29.40 2 St. Edward's LSA D3 East 5 0 5 0 2 6 2 24.90 3 Houston LSA D3 East 3 1 4 4 3 4 4 22.30 4 Louisiana Tech LSA D3 East 2 2 2 6 8 14 6 6.70 5 Westfield State CLC D3 4 1 4 1 4 9 3 5.00 6 UT-Dallas LSA D3 West 1 1 1 4 6 11 7 1.50 7 Framingham State 3 3 3 4 5 8 5 1.20 8 WPI CLC D3 1 4 1 8 7 1 8 0.40 9 TAMU-Corps of Cadets LSA D3 East 0 1 0 2 10 2 13 0.10 10 Hardin-Simmons LSA D3 West 0 3 0 3 12 10 10 0.00 11 Southern Conn. State CLC D3 0 6 0 11 11 3 12 0.00 12 TAMU-Corpus Christi LSA D3 East 0 3 0 3 9 5 14 0.00 13 Incarnate Word LSA D3 West 0 0 0 0 14 Tarleton State LSA D3 West 0 0 0 0 15 Butler UMLC 0 0 0 4 16 Western Colorado RMLC D3 0 0 0 4 100.00 <