By 
Although there are many ranking systems on many websites for NCAA basketball, the two most respected are the Associated Press Poll and the ESPN/USA Today Coaches Poll. Different people will have their favorites based on what they think is the best indication of a team’s current form. The NCAA Basketball Rankings are very important, providing weekly rankings throughout the season.
The USA Today Coaches Poll Panel is comprised of 31 head coaches from Division 1 organizations. All of these coaches are members of NABC (The National Association of Basketball Coaches). USA Today became involved with the ratings system in 1993 when they joined forces with CNN to take over the UPI ratings. ESPN joined as another sponsor of the NCAA Basketball Rankings in 2002. The Coaches’ Poll originally covered only the top 20 college teams and this was the case from its inception in 1950 until 1990. Only then did it change to include the top 25. best teams. . He has continued to cover 25 ever since.
The second of the published NCAA basketball rankings is probably a bit more valued, though as I say, this is a matter of opinion. This is an Associated Press poll, which is also a weekly ranking system of the top 25 teams in Division 1. These rankings are compiled by a panel of sportswriters from across the country. The system works on the principle of awarding points to each team. The editors will decide which team they think deserves the most points and give them a maximum of 25 votes. The team that, in their opinion, is in second place, will get 24 points. This continues until the team that impressed them the least receives 1 point. Each of the writers will award points to all 25 teams in the same way and the team with the most points will be ranked number 1.
The Associated Press NCAA Basketball Rankings have been compiled since 1948 and cover the top 25 men’s and women’s teams in Division 1. This poll is released every Monday and ballots are made public. While the Associated Press poll is highly regarded and watched intensely each week, it has very little influence on the game. Teams invited to play in March Madness, the NCAA basketball tournament, will typically include the top 25 teams as a matter of course.
There are times when these two ranking systems disagree on the number one team. Sometimes there is a difference of opinion between the two polls and this has led to national titles being split between two different college teams. Having two NCAA basketball rankings running at the same time has often been a matter of contention and controversy.