The thing that jumps out at me from the data is that there's UConn and there's everybody else.
Ten years of worth information. Top 25 at the beginning of the year; top 25 at the end of the year. Awarding 25 points for a first place vote, 24 for second, etc., a perfect score (over ten years) would be 250. UConn scored 243 out of 250 in preseason polling and 245 out of 250 in end of regular season polling. That's 97.2% beginning of and 98% end of season. UConn gets an A+ in virtually any grading system.
Second and third place is a virtual dead heat between Baylor and Notre Dame. Baylor scored 216 preseason points and 220 end of season points, while ND scored 214 preseason and also 220 end of season points. With 250 total points, both score a solid B. Baylor 86.4% pre and 88% end of season percentages with ND getting 85.6% and 88%.
Rounding out the top 5 are "C/C" performer Stanford and and "C-/F performer Tennessee. Stanford's pre and end percentages are 77.2% and 76% with Tennessee displaying 70.8 preseason and 53.6%.
Also of interest is those programs that are most consistently over-rated. Teams that ended the season ranked lower than their pre-season ranking were (probably) over-rated. Big 12 teams Oklahoma, Texas, and West Virginia led the way in being over-rated with Oklahoma scoring 62 fewer points (over the course of ten years) by the end of the season than they scored at the start. Texas at 51 points and WVU at 50 points followed.
The SEC also had 3 of the top 10 over valued teams with #4 Tennessee (43 points), #5 Georgia (40 points), and #10 LSU (31 points). The ACC contributed #6 Duke (36 points) and #8 UNC (34 points). #7 Cal (35 points) and #8-tie DePaul (34 points are also in the top ten.
The most under rated team (by a landslide) was Oregon State which scored 34 more points in end of season polls than they did in the pre-season. Said differently, Ore. St. improved its ranking by an average of almost 7 places over the course of the season for the 5 years they started as a ranked team. No love for Corvallis, that's for sure. Following the Paddletails are the Terrapins undervalued by an average of one place every year for 9 years.
Strangely, as good as the Huskies are, even they have been undervalued by voters, which is difficult to do given that they started 6 of the 10 years in first place. Can't go up when you're on top. Other really good programs undervalued by the voters are Notre Dame, Baylor, Miss. State, and South Carolina.