Agre, who will be a junior in the fall, is enrolled in spring classes at A&M and is immediately eligible to train and compete for the Aggies.
"With Markie Malone retiring from volleyball, it was a necessity for us to have more depth at setter," Corbelli said. "Mariah is able to step in immediately, add competition and give us another opportunity to improve the skill and the performance of our entire setting position.
"The coaches felt that the entire team would benefit from a stronger level of competition at that position, and that is probably the most exciting thing for me is that the setting position is going to be so much more improved."
Agre started every match and played in 109 of 112 sets as the Lobos went 14-15 in 2011. The 5-10 sophomore from San Diego, Calif., led the team and ranked third in the Mountain West Conference and 82nd in the nation with 10.38 assists per set. Agre, who posted 50 or more assists seven times last season, also was third in the MWC with 10.75 assists per set in league matches only as the Lobos went 6-8 and tied for fifth place.
Agre, who also led the Lobos with 15 double doubles and 26 aces as a sophomore, started 17 matches as a freshman, helping lead the Lobos to a 20-10 record -- including a 12-4 second-place finish in conference play -- and an appearance in the NCAA tournament. She finished third on the team with 2.39 digs per set and also was named to the 2010 Academic All-Mountain West Team.
A graduate of Elsinore High School, Agre played club ball for the Temecula Vipers, coached by former Arizona All-American setter Dana Burkholder and Mary Jo Peppler, one of the most decorated players in volleyball history.
"We talked to both Dana and Mary Jo, and they described Mariah as having great court awareness and being very solid in her position," Corbelli said. "They said she can be very offensive as well with her second ball attack and that she is an all-around good volleyball player who competes with confidence.
"We also got a chance to see Mariah play because we had a video where her team was the opponent in one of our scout videos. She appeared to be very insightful to the game and creative. She is a very steady floor leader, she plays very good defense and has a phenomenal serve."
In addition to Agre, A&M lists two other junior-to-be setters for 2012: two-year starter Allie Sawatzky and Allie Freiwald.