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 McCallie School - 2010 TSLA Division 1 State Champions
     
  
  
   
Rank Team                    Total  SOS Ave   SOS Wt Ave  SOS RPI    W  L  T
                             Games Rnk Value  Rnk Value  Rnk Value
 
   1 McCallie                  16   1  91.84   1  81.10   4   0.53  15  1  0
   2 Montgomery Bell Acad      20   2  91.35   2  80.06   1   0.61  14  6  0
   3 Memphis Univ School       13   3  91.03   3  79.35   2   0.56  11  2  0
   4 Christian Bros            15   4  89.99   4  77.06   9   0.46   9  6  0
   5 Ravenwood                 19   5  88.77   5  75.02   3   0.56  11  8  0
   6 Farragut                  15   6  87.57   6  72.65   5   0.50   7  8  0
   7 Univ School Nashville     13   7  86.79   7  70.95   8   0.46   2 11  0
   8 Brentwood LC              14   8  86.15   8  69.62   6   0.47  11  3  0
   9 Houston                   17   9  85.07   9  67.95   7   0.47   7 10  0
  10 Franklin                  14  10  84.38  10  66.38  10   0.43   6  8  0