[2] On June 15, 2010, Klein was promoted to head coach of the UNLV women's soccer program after the departure of Kat Mertz who left for Texas.
[3] On March 1, 2012, Klein was named an assistant coach of the Washington State women's soccer program.
[4] On January 17, 2014, Klein was named an assistant coach of the USC Trojans women's soccer program.
[6] On February 28, 2018, Klein was named the new head coach of the Michigan Wolverines women's soccer program.
[7] On September 21, 2021, Michigan announced they extended Klein's contract through the 2025 season.