"From what I was told, he didn't meet all of the requirements," Tigers coach Johnny Jones told ESPN. "He wasn't certified by the school to be on the ballot."
LSU spokesman Kent Lowe confirmed to ESPN that Simmons "did not have the necessary criteria to be eligible."
Asked about the reason after LSU's loss to No. 22 Kentucky on Saturday, Simmons said: "I don't know. I'm not too sure, but I believe I'm still the best player, so as long as I believe it, it doesn't really matter.
"Mr. Wooden was a teacher, right?" Simmons added. "It's a part of it. That's their criteria. They talk about playing so much then they bring other stuff into it. It is what it is. I'm not fazed by it. I just wanted to win for my team and see how far we could go."
The 6-foot-10 Simmons, who is averaging 19.7 points, 11.9 rebounds and 5.1 assists this season, was benched for the start of the Tennessee game Feb. 20 for an academic issue. He entered with 15:30 remaining. He had started all 26 previous games and also started the last three since coming off the bench.
Simmons was on the Feb. 10 Wooden list that included 20 players. The 15 finalists for the award will be disclosed Saturday, and the winner will be announced during ESPN's College Basketball Awards Show during the weekend of April 8.
The Wooden Award has several qualifications:
Candidates must be full-time students in an accredited NCAA college or university.
Consideration should be given to scholastic achievement and aspirations. All candidates must have a cumulative 2.00 grade point average since enrolling in their current university.
Candidates must exhibit strength of character, both on and off the court.
Candidates should be those who contribute to the team effort.
Candidates must excel in both offense and defense.
Candidates should be considered on their performance over the course of the entire season (preconference, conference and tournament play).
"It's their award," Simmons said. "I'm not too worried about it. I just want to win. I'm a team guy. I just want my team to do well."
This is not the first time a player has been ineligible for the award. Syracuse coach Jim Boeheim wrote in his recent book that Carmelo Anthony was disqualified from the Wooden Award in 2002-03 because he had a 1.8 GPA in the first semester.