He had told Scout.com on Oct. 1 that he was going to wait until the spring to sign. Reid changed his mind after an official visit to the SLU campus last weekend, which included watching the Billikens beat Missouri-St. Louis in the season opener at Chaifetz Arena.
"They've got a great coaching staff," Reid said in a text message. "I liked being with the players and loved the school."
Since he took over the Billikens a year and a half ago, Majerus has been searching for shooters who can fill it up from the perimeter.
Reid averaged 17.3 points, 4.6 rebounds 4 assists and shot 55.2 percent from the field and 37.2 percent from 3-point range as a junior, when he led Hayden to a 25-1 record and the Kansas Class 4A state championship. He was also selected as the Centennial League player of the year.
"Jeff is indicative of what the term student-athlete represents — he is a terrific student as well as a gifted athlete," Majerus said in a press release. "Jeff has winner written all over him and possesses a fiery, competitive streak. His skill set of being an outstanding shooter as well as a `make-it-look-easy' passer fit the Saint Louis University game plan."
Reid averaged 23 points per game as a sophomore at Brewster High School before his family moved to Topeka.
Reid's brother, Josh, played at Kansas State.
"I think anytime you can add a kid with a winning resume and skill this late in the game, it's a great idea," said Scout.com's National Recruiting Director Dave Telep.
With the addition of Reid, the Saint Louis U. roster will be nearly filled with sophomores and freshmen next season.
The Billikens signed seven players a year ago — Brett Thompson, Kwamain Mitchell, Brian Conklin, Willie Reed, Femi John, Kyle Cassity and Ruben Cotto — and have signed four this fall with Smith, Remekun, Salecich and now Reid.