The Mormon Church, also known as the Church of Latter Day Saints (LDS), is based in Salt Lake City, Utah and is the major branch of the Mormon religion.
The Mormon Church itself is part of a larger corporation which runs all religious and business operations of the LDS. It is not a publicly trade corporation, of course, so the business dealings of its companies such as Marriot Hotels and Interac School are not open to public review.
With regards to English teaching, the Mormon Church runs Brigham Young University (BYU) and Interac Schools. BYU offers students a bachelor's degree in TESOL which then allows them to then be employed overseas in America's colonies of Japan, South Korea and Taiwan. The Church's Interac School may also place BYU graduates into illegally outsourced jobs in Japan as public school teachers.
Most mainstream churches abandonned their missionary work due to ethical concerns.
See Pennycooke's Teaching English as a Missionary Language