many churches the Sunday school is the chief and almost only hope for church growth [my emphasis]. But whether in the family church, or the church among the masses of the great city, or the country church, the Sunday school will remain the most hopeful field of evangelistic endeavor.”5 J. M. Frost, first head of the Baptist Sunday School Board, said, “The school becomes as an agency what the church makes it; is capable of almost indefinite expansion in church efficiency as a channel for the output