The signing was made official by the Cyclones in a Tuesday press release.
"Hallice is a player that will fit our system and what we want to do as a basketball team well," coach Fred Hoiberg said in a statement. "He is a versatile guard that shoots the ball at a very high percentage."
Cooke, a 6-foot-3, 185 pound New Jersey product, transferred from the Beavers' program after one year in which he averaged 8.2 points per contest and shot 45.6 percent from three-point range.
After sitting out the 2014-15 season, Cooke will have three seasons of eligibility.
"I am excited to be a part of the Iowa State program," Cooke said in the statement. "Coach Hoiberg puts his players in a position to be successful. The style he coaches them to play, spreading the court and allowing players to make plays, is exactly what I had in mind when I started looking at programs after deciding to transfer. The opportunity to come into a program that is a proven winner and one that will compete for championships is something I look forward to. I can't wait to get on campus and start working with my new teammates."
Cooke has three remaining years of eligibility
Hoiberg's staff has now filled its allotted 13 scholarships for the 2014-15 year, adding immediately-eligible UNLV transfer Bryce Dejean-Jones and Greek big man Georgios Tsalmpouris this offseason. Point guard Clayton Custer was the only American prep signee in the 2014 class.
ISU returns nine members from a squad that made the Sweet Sixteen this past season, including Abdel Nader and Jameel McKay, who sat out as transfers but are expected to play key parts for a team that loses DeAndre Kane and Melvin Ejim to graduation.