127 Beginning in approximately 1904, a learned Iranian believer known as
Sadru's-Sudur established the first teacher-training class for
Baha'i youth in Tehran with 'Abdu'l-Baha's encouragement. The
classes met daily, and the graduates, who had been trained in the
beliefs of other religions as well as various aspects of the Baha'i
Faith, contributed greatly to the expansion and consolidation of the
Cause in their native land.
128 The model in question is the "Ruhi Institute", whose materials and
methods have been adopted by many Baha'i communities throughout the
world. Its guiding philosophy is an integration of service
activities with focused study of the Baha'i Writings themselves.
Organized as a series of levels of study, which form a central
"trunk" of basic understanding of the spiritual essentials taught by
Baha'u'llah, the system allows for the almost infinite development
by various user communities of branching subsets that serve
particular needs.