Question: What school did Idaho Vandals' head coach go to after hiring Robb Akey?

Context paragraphs:
2008 Idaho Vandals football team: The 2008 Idaho Vandals football team represented the University of Idaho during the 2008 NCAA Division I FBS football season.  Idaho competed as a member of the Western Athletic Conference (WAC), and played their home games in the Kibbie Dome.  The Vandals were led by second-year head coach Robb Akey.

2012 Idaho Vandals football team: The 2012 Idaho Vandals football team represented the University of Idaho in the 2012 NCAA Division I FBS football season.  The Vandals were led by sixth-year head coach Robb Akey for the first eight games and played their home games on campus at the Kibbie Dome.  This was Idaho's final season as a member of the Western Athletic Conference; the WAC ceased to support football after the 2012 season, and Idaho played as an independent in football in 2013.

2011 Idaho Vandals football team: The 2011 Idaho Vandals football team represented the University of Idaho in the 2011 NCAA Division I FBS football season.  The Vandals were led by fifth year head coach Robb Akey and played their home games at the Kibbie Dome.  They are members of the Western Athletic Conference.  They finished the season 2–10, 1–6 in WAC play to finish in last place.

2006 Idaho Vandals football team: The 2006 Idaho Vandals football team represented the University of Idaho during the 2006 NCAA Division I FBS football season.  Idaho competed as a member of the Western Athletic Conference (WAC), and played their home games in the Kibbie Dome, an indoor facility on campus in Moscow, Idaho.  The Vandals were led by Dennis Erickson, hired following the departure of Nick Holt for an assistant's position at USC in February 2006.  Erickson was previously the head coach of the Vandals from 1982-85, his first collegiate head coaching position.

2007 Idaho Vandals football team: The 2007 Idaho Vandals football team represented the University of Idaho during the 2007 NCAA Division I FBS football season.  Idaho competed as a member of the Western Athletic Conference (WAC), and played their home games in the Kibbie Dome.  The Vandals were led by first-year head coach Robb Akey, hired following the departure of Dennis Erickson for Arizona State in December 2006.

1978 Idaho Vandals football team: The 1978 Idaho Vandals football team represented the University of Idaho in the 1978 NCAA Division I-AA football season.  The Vandals were led by new head coach Jerry Davitch and were members of the Big Sky Conference.  They played their home games at the Kibbie Dome, an indoor facility on campus in Moscow, Idaho.  Davitch was previously an assistant at the Air Force Academy for five seasons under longtime head coach Ben Martin, preceded by four years as a high school head coach in Tucson, Arizona.

Dennis Erickson: Dennis Brian Erickson (born March 24, 1947) is a retired American football coach and former player.  He was the head coach at the University of Idaho (1982–1985, 2006), the University of Wyoming (1986), Washington State University (1987–1988), the University of Miami (1989–1994), Oregon State University (1999–2002), and Arizona State University (2007–2011).  During his tenure at Miami, Erickson's teams won two national championships, in 1989 and 1991.  His record as a college football head coach is 179–96–1 ( ).  Erickson retired on December 30, 2016 after 47 years as a coach.

2010 Idaho Vandals football team: The 2010 Idaho Vandals football team represented the University of Idaho in the 2010 NCAA Division I FBS football season.  The Vandals, led by fourth-year head coach Robb Akey, were members of the Western Athletic Conference (WAC) and played their home games at the Kibbie Dome, an indoor facility on campus in Moscow, Idaho.  They finished the season 6–7, 3–5 in WAC play.

Wayne Moses: Wayne Moses (born January 11, 1955, New Gulf, TX) is an American football coach.  He most recently served as running backs coach under head coach Robb Akey at Idaho.

2009 Idaho Vandals football team: The 2009 Idaho Vandals American football team represented the University of Idaho during the 2009 NCAA Division I FBS football season.  The Vandals, led by third-year head coach Robb Akey, were members of the Western Athletic Conference (WAC) and played their home games at the Kibbie Dome, an indoor facility on campus in Moscow, Idaho.

Supporting paragraphs: 2007 Idaho Vandals football team Dennis Erickson
Answer: Arizona State University