See Strength of Schedule for an explanation. There are three sos calculations:
the 1st averages the opponents computer rating based on
 computer margin of victory "Reg In" and "ROM", the 2nd
 is similar to the first but instead of a simple average, it
 weighs games against stronger teams more heavily, and
 the 3rd is based on the RPI SOS formula used by the NCAA. This factor is not used in the power rating calculation.
          
      
   
     
   
           
           

Use the Report Scores link for both scores and missing games.
     
  
  
   
Rank Team                    Total  SOS Ave   SOS Wt Ave  SOS RPI    W  L  T
                             Games Rnk Value  Rnk Value  Rnk Value
 
   1 Waukesha West             11   1  54.74   3  22.46   2   0.54   0 11  0
   2 Brookfield, WI            17   2  54.65   1  22.73   1   0.55  10  7  0
   3 Arrowhead Club            16   3  54.57   2  22.55   6   0.51   5 11  0
   4 Arrowhead                 24   4  54.05   5  22.04   4   0.53  20  4  0
   5 Kettle Moraine            16   5  54.04   4  22.26   7   0.50   6 10  0
   6 University HS, WI         11   6  52.89   6  20.86   3   0.53   7  4  0
   7 Verona, WI                17   7  51.68   7  19.72   5   0.52   8  7  1
   8 Madison West, WI          12   8  51.65   8  19.60   8   0.48   3  8  0
   9 Sun Prairie               12   9  51.45   9  19.35  11   0.45   0 10  0
  10 Middleton                 10  10  49.67  10  17.62   9   0.46   2  6  0
  11 LaFollette                11  11  48.59  11  16.67  10   0.46   9  2  0
  12 Waunakee                   0  12   0.00  12   0.00  12   0.00   0  0  0