"They're in my top five," Walls said of the Buckeyes. "I like them, they're just not at the top of my list."
Walls is also considering Notre Dame, Pittsburgh, Virginia and Michigan.
"My favorites right now would probably be Notre Dame and Michigan," Walls said.
As a junior at Woodland Hills High School in 2004, the 6-1, 180-pound Walls had six interceptions. He also played running back, receiver and returned kicks, and scored a total of 11 touchdowns.
Walls attended Ohio State's 37-21 win over Michigan in November at Ohio Stadium.
"The fans were wild – that's what sticks out the most," he said. "That and Michigan losing."
Was Walls pulling for a particular team that day?
"I didn't really care who won," he said. "It was a good game. But since I was there for Ohio State, I kind of wanted them to win."
"Just seeing how much those guys enjoy going to Ohio State and Michigan has really opened up my eyes to those schools," Walls said.
Walls is simply trying to keep his options open at this point. It is safe to say that Ohio State does not have a very strong chance at landing him.
"Yes, but I'm looking at them still," Walls said.
Walls, who runs the 40 in 4.4 seconds, would like to make a decision sometime this summer.
"Probably early – before the season starts," he said.
The cornerback was asked to reveal his strengths and weaknesses.
"Strength-wise, the ability to be coached," he said. "I feel like I'm pretty smart out there on the field. And my speed.
"A weakness? I really don't have any. I don't think I have any so far. I'm excellent."
The opportunity for playing time as a true freshman will factor into his decision.
"Yes, I want to play right away," he said.
Walls says he pays attention to where the top cornerbacks are playing.
"Yeah, I heard Ohio State got a new one – Jamario O'Neal," Walls said. "I'll have to look at that a little more."
Woodland Hills was 5-6 in 2004 and lost in the second round of the playoffs.
Walls has a 3.5 GPA and is awaiting his results from the SAT.