Question: St Mary's Catholic High School, Grimsby and Matthew Humberstone School joined to form what school?
Sentence (from "Regis High School (Iowa)"): Opened in 1958 as a successor to Immaculate Conception High School, it drew students from the parishes of All Saints, Immaculate Conception, St. Joseph (Marion), St. Matthew, St. Pius X, and St. Wenceslaus.
Relevant evidence: No