"I picked them because I felt comfortable with the coaching first of all," Ennis told Scout.com in an exclusive interview.
"Also the position that they have for me coming in is going to give me a chance to play a lot as a freshman," he added. "I'll be able to make mistakes and not have someone itching down my back my first year."
The Orangemen had an early lead on the competition. Scout.com's No. 4 rated lead guard grew up following Syracuse after playing in his first major travel team tournament in the Carrier Dome.
"It was my dream school when I was younger," Ennis said. "I always wanted to go to Syracuse."
"That was one of the first colleges that I saw," he added. "That was the first thing I remember about college basketball so they had a head start from there."
At the beginning of Ennis' junior season, Syracuse began to ramp up their interest level. Ennis noticed and that stuck out to the 6-foot-2 guard.
"I think at the start of the year when my recruiting really started to pick up a lot they called to make sure I was one of their main people at their midnight madness," he said. "That along with the unofficial visit I took during the season really put them ahead of everybody else heading into the summer."
At one point, Ennis had considered taking college visits. But he knew where he wanted to go.
"After this summer was done and the live period I just felt comfortable with them," Ennis said. "They showed me that I'm one of their top recruits by being at all of my games."
"The main thing where I knew where I wanted to go there was when my brother asked me what's the one school that if someone committed there before you, you'd be mad at. I thought about it and the only school I could think of was Syracuse."
"That pretty much helped me make my decision," he said. "I knew if someone would commit there before me, I'd be upset because that's a school I really wanted to go to."
Ennis said he told the Syracuse coaches the news last week.
"Coach Boeheim was in London," Ennis said. "He was excited. He told me he wanted me to come out to their elite camp."
Ennis, Scout.com's No. 20 overall prospect, is Syracuse's first commitment in the 2013 class.