This article is from the The Religious Society of Friends FAQ, by Marc Mengel firstname.lastname@example.org with numerous contributions by others.
During the Revival movement in the later 1800's many Friends Meetings
were influenced by Revival preachers. Many of these later hired
preachers and now hold more "conventional" services, with a
preacher, choir, etc. These meetings often call themselves
"Quaker Churches" or "Friend's Churches" rather than "Quaker
Meetings" or "Friends Meetings." Some such branches of
Quakerism refer to themselves as "Evangelical Friends", and
some have gone so far as to hold baptisms and communion, which
many consider an extreme departure from early Quakerism.
There are considered to have been quite a few "schisms" in
Quakerism over the years; the overall history is far too
complicated to describe here.