Editing Christian Science practitioner (section)

===Christian Science teachers (C.S.B.)===
An authorized teacher is one who, having had primary class instruction and a minimum of three years' experience as a practitioner, has completed the [[normal college|normal]] course. Normal class instruction is held once every three years and is limited to 30 pupils. Primary class is held once a year by each teacher and is also limited to 30. According to the ''Manual'', those who complete the normal class receive the certificate "C.S.B."<ref>{{cite book | last=Eddy | first=Mary Baker | title=[[Manual of The Mother Church|Church Manual of The First Church of Christ, Scientist, in Boston, Massachusetts]] | edition=89th | date=1910 | pages=90-91}}</ref> Tuition for both classes is fixed by the ''Manual'' at $100.{{sfn|Eddy|1910|p=91}}{{sfn|Eddy|1910|p=84}}

Primary class instruction is held all over the world, wherever authorized teachers of Christian Science live or decide to teach; the normal class is held by the Christian Science Board of Education in [[Boston]], Massachusetts.{{sfn|Eddy|1910|p=90}} The Board selects a teacher, who usually teaches the normal class just once in a lifetime, and is not identified until several weeks after the class has ended.