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 Gilbert                   10   1  71.24   1  43.19  10   0.50   2  8  0
   2 Xavier College Prep       10   2  71.19   2  43.12   8   0.50   1  9  0
   3 Pinnacle                  11   3  70.87   3  42.77   4   0.52   5  6  0
   4 Tempe-Corona Del Sol      12   4  70.25   4  41.89   9   0.50   5  7  0
   5 Horizon                   12   5  69.49   5  40.60   2   0.53  10  2  0
   6 Chaparral, AZ             12   6  69.46   6  40.53   1   0.54  11  1  0
   7 Pinnacle Club             15   7  65.99   7  35.82  11   0.49   4 11  0
   8 Tucson Storm Club         14   8  65.55   8  35.11  13   0.49   2 12  0
   9 Desert Mountain           14   9  65.40   9  34.94  12   0.49   2 12  0
  10 Phoenix Country Day       15  10  65.29  10  34.82  14   0.48   5 10  0
  11 Horizon Club              15  11  64.95  11  34.43   6   0.51   8  7  0
  12 Mountain Pointe           15  12  64.65  12  34.01   7   0.50  10  5  0
  13 Notre Dame Prep, AZ       16  13  64.52  13  33.78   3   0.52  13  3  0
  14 Desert Vista              16  14  64.30  14  33.46   5   0.52  15  1  0