"They have great tradition and they also have a great coach," Tatum said of the Tar Heels.
UNC joins a list of offers that already includes Florida, Illinois, Kansas, Kentucky, Marquette, Memphis, Missouri and St. Louis.
"It's a blessing just really thankful because I still get excited for every offer the same," Tatum said.
North Carolina assistant coach Steve Robinson attended one of Tatum's high school games last season, and then Roy Williams was front and center to watch Tatum at the Peach Jam earlier this month.
The top coaches are clearly already convinced, but there's a consensus among scouts as well that Tatum is an elite prospect. His resume includes playing with the USA U16 National Team.
Not bad for a kid that turned 15 just a few months ago.
"Putting Tatum in a position category is unfair to the kid as he does everything when on the court," says Scout.com's Brian Snow. "He shows the vision of a point guard, the shotmaking of a shooting guard, has the size of a wing, and then will rebound as well. He scores from all three levels on the court and gets others easy looks as well. He is so long and so skilled that there is no good way to defend him. Once he gets strength it is incredible to think about what type of player he could be."
Tatum recognizes his versatility as his biggest asset, though he admits modeling his game after Syracuse's Michael Carter-Williams, a similarly-sized point guard.
"I'm the type of player that doesn't have a defined position," Tatum said. "Wherever my coach puts me I feel like I can excel. But I do feel very comfortable playing the point. A lot of guys can score, but being able to be unselfish and find open teammates is very fun.
Tatum played point guard on the AAU circuit this year, and also played that position for the second half of his freshman season at Chaminade.
"I feel most comfortably playing the one or the three, and I feel I can post up as well," he said. "It's fun, it makes me a matchup problem for a big guy or a little guy."