She was raised as a Catholic and went to Catholic schools as a child. Now it is not completely clear what her beliefs are. She has defended Scientology on numerous occasions, giving hints that she follows Scientology.
Scientology is Fake.
In Scientology, the state of Operating Thetan (OT) is a spiritual state above Clear. L. Ron Hubbard, the founder of Scientology, defined it as "knowing and willing cause over life, thought, matter, energy, space and time (MEST)."
To go clear is a term used in the Church of Scientology. It is a state achieved by using Dianetics to free the self of all subconscious negative or unwanted emotions and traumas.
You have to take a class for Scientology.
Scientology has often been accused of using dirty tricks to attract people, and to keep them. It has in fact been outlawed in some countries. To learn more about Scientology, I suggest you start with the Wikipedia article, http://en.wikipedia.org/wiki/Scientology. There is also a more specific article on controversies here: http://en.wikipedia.org/wiki/Scientology_controversies
There are over 11'000 Scientology churches, missions and groups worldwide. To find the closest one to you, you can use the "Scientology church locator" on the Scientology website. That is a map that shows you the location of all Scientology churches and missions.
The Scandal of Scientology
Scientology was invented by the author Ron Hubbard.
Scientology cross was created in 1955.
The Scandal of Scientology was created in 1971.
The word Scientology is a pairing of the Latin word scientia ("knowledge", "skill"), which comes from the verb scīre ("to know"), and the Greek λόγος lógos ("word" or "account [of]")._source is wikipedia