Schrock was born on August 20, 1943, in Holdrege, Nebraska, and graduated from Holdrege High School in 1961 and Nebraska Wesleyan University with a B.A.
He is a former member of Nebraska corn based organizations, and current member of both Holdrege and Superior chamber of commerce, farm based organizations and Holdrege United Methodist Church.
Schrock was appointed to the legislature on Dec. 31, 1990 to represent the 39th Nebraska legislative district to replace William E. Barrett who was elected to Congress.
He left office in 1993 because of redistricting and was then elected to the in 1994 to represent the 38th Nebraska legislative district.
Because Nebraska voters passed Initiative Measure 415 in 2001 limiting state senators to two terms after 2001, he was unable to run for reelection.