Stewart, a 6-foot-2, 225-pound linebacker from Matthews (N.C.) Butler, has been offered by the three schools in his top list, plus eight others.
"I say Purdue, because I heard they are a good school for linebackers," Stewart said. "Somebody told me about that, so I looked it up and sparked a little interest.
"Chapel Hill, because it has a good program and the school has a lot of credibility. If you get a degree there, you're pretty much set.
"And Louisville, I guess it's because it's the school that I've most recently visited and they showed me the whole campus – like the dorm rooms – and it looked nice. My whole family came with me – I really trust my family decision, too – and they got a good vibe from it. We sat down with the head coach one-on-one and had a talk."
Stewart admitted that Louisville was his leader.
"It's not like I'm definitely going there," Stewart said. "It's up there, but it's not like it's beyond all the other schools. I could always change my mind."
The genesis of Stewart's interest in Louisville comes from his older brother, Roger. Roger played football at NC Central and is trying to catch on with an NFL team.
"I play football, but I'm not into stats," Stewart said. "But my older brother, he's the one that pays attention to all the college stuff."
Following his visit to Louisville, Stewart camped at Michigan.
Stewart last spoke to Gunter Brewer, his primary UNC recruiter, about a month ago. But he quickly points out that Brewer was the last college coach that he has spoken to.
"Right now, I'm just focused on getting myself better for the season," Stewart said.
Stewart will take a break from preparing for Butler's title defense – Butler won the NCHSAA 4AA title in 2012 – and visit South Carolina this week. He hasn't thought about any other visits beyond that trip.