On October 25, 1885, the first Christian Science Sunday School formally opened in Boston, and classes were formed with six teachers. Calvin Frye, Mary Baker Eddy's long-time secretary, was one of them.
Mr. Frye used the Class-Book, for Sabbath-School Teachers as an administrative notebook to keep track of Sunday School attendance from November 1885 to September 1886. The book was published by the Congregational Publishing Society in Boston and was designed for the specific purpose of keeping attendance and correlative notes. (The early Christian Science Sunday School was patterned after those of other denominations. The Bible was central to teaching, but an additional number of Protestant texts were used as well, such as the International Sunday School Lessons by the American Sunday School Union, an international Protestant group). Frye's Class-Book included a list of 14 "Duties of Sabbath-School Teacher."
Although Frye was not the author of this list of duties, nor do we know what he thought of them, he obviously gave them some consideration since he made the effort to cross out the phrase "and think of the Judgment" under duty number 10, perhaps reflecting his own theological belief as a Christian Scientist that there is no final day of judgment (see Science and Health, p. 291).