He made his decision official with his mom present Thursday morning, after giving Vol coaches the final word on Tuesday.
He said the difference was not the Vols' facilities or fan base, but new coaches and NFL veterans Monte Kiffin and Ed Orgeron.
CLICK HERE for the report.
According to USA Today, Jackson's decision is a hit to LSU. The No. 2-ranked cornerback verbally committed to his home-state Tigers a year ago.
"It was a very tough decision," Jackson said after choosing Tennessee at the Barbe coaches' office. "But Louisiana will always be my home."
Tennessee was not on Jackson's radar until early January, when Ed Orgeron left an assistant coaching job with the New Orleans Saints to become Tennessee's defensive coordinator. Jackson's father, former McNeese State secondary coach Lance Guidry, is an old friend of Orgeron, who has coached at various schools in Louisiana and recruited the state for years.
CLICK HERE for the full report.
Along with poaching in Louisiana, Tennessee has also pulled a couple of highly-touted recruits out of Florida. According to UTSports.com, head coach Lane Kiffin put a priority on attracting top-notch players from rival states.
"I thought it was very important for us to set the foundation from which we were going to compete in recruiting. I am very proud of our staff, especially the turning around of Marsalous Teague, who previously was committed to Florida, and especially for going into Pahokee, Fla., and getting Nu'Keese Richardson, who is one of the best players from the state of Florida.
"I think in years to come, we will set a foundation and a standard for the way we're going to recruit and create relationships. After only having three weeks with a complete staff, you could see toward the end of recruiting that some of the top players were being attracted to Tennessee and they really loved their visits. We just didn't have enough time to solidify all of them.
"We already have started junior recruiting and our goal is to have one of the top classes in the nation next year."
CLICK HERE for UTSPORTS.com. and updates on recruits once they are official.
As of 12:30 p.m. Rivals.com ranked Tennessee's recruiting class 23rd in the nation, 10th in the SEC. But their analysis had yet to factor in Thursday morning's commitment from the five-star Jackson.
CLICK HERE for rankings and analysis from RIVALS.com.