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 St Paul's 2010 MIAA A Champions and Landon/Georgetown Prep - 2010 IAC Co-Champions
     
  
  
   
Rank Team                    Total  SOS Ave   SOS Wt Ave  SOS RPI    W  L  T
                             Games Rnk Value  Rnk Value  Rnk Value
 
   1 Landon                    21   1  95.73   1  89.76   3   0.54  17  4  0
   2 Mount St Joseph           18   2  95.72   2  89.71  14   0.47   1 17  0
   3 St Paul's                 19   3  95.53   3  89.36   4   0.52  15  4  0
   4 Loyola-Blakefield         19   4  95.43   4  89.18  12   0.49  13  6  0
   5 McDonogh                  22   5  95.36   5  88.98   6   0.50  16  6  0
   6 Severn                    20   6  95.26   6  88.73   9   0.50   5 15  0
   7 St Albans                 20   7  95.22   7  88.54   5   0.51   8 12  0
   8 Georgetown Prep           22   8  94.88   8  87.84   1   0.59  18  4  0
   9 Gilman                    19   9  94.80   9  87.79   8   0.50   9 10  0
  10 St Mary's Annapolis       20  10  94.72  10  87.56   7   0.50  12  8  0
  11 Calvert Hall              15  11  94.62  11  87.34  11   0.49   9  6  0
  12 Boys' Latin               20  12  94.58  12  87.27  13   0.49  16  4  0
  13 Archbishop Spalding       20  13  94.39  13  86.80  10   0.49   9 11  0
  14 Episcopal HS              21  14  93.17  14  83.98   2   0.57  14  7  0
  15 St Stephen/St Agnes       24  15  93.09  15  83.82  15   0.46  19  5  0
  16 Bullis                    20  16  92.37  16  82.38  16   0.44  15  5  0