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.
          
      
   
     
   
           
           

Congratulations to North Cross 2010 VISAA D3 State Champions
     
  
  
   
Rank Team                    Total  SOS Ave   SOS Wt Ave  SOS RPI    W  L  T
                             Games Rnk Value  Rnk Value  Rnk Value
 
   1 Roanoke Catholic          11   1  84.46   2  66.12   2   0.72   2  8  0
   2 Wakefield School          16   2  84.20   1  66.35   1   0.78   5 11  0
   3 North Cross               15   3  81.30   3  60.26   3   0.70  11  4  0
   4 Trinity Christian         10   4  81.06   4  59.61  11   0.12   1  9  0
   5 New Covenant School       14   5  79.86   6  57.31   9   0.30   2  8  0
   6 Trinity-Meadow View       12   6  79.70   5  57.70   7   0.39   4  8  0
   7 Tandem Friends             4   7  79.23   7  56.70   5   0.50   1  3  0
   8 Fredericksburg Academy     9   8  76.03   8  51.17   6   0.47   2  7  0
   9 Stuart Hall                6   9  75.04  10  49.06  12   0.08   3  3  0
  10 Steward                    9  10  74.65   9  49.34  10   0.28   4  5  0
  11 Wakefield Cou Day          8  11  73.38  11  46.51   4   0.55   6  2  0
  12 Miller School              6  12  71.91  12  43.91   8   0.31   0  4  0