Jennifer Costello - Scientology Service Completions

Note: Preliminary analysis suggests that about 60% of people who try Scientology do only a single course or service, that 80% of new members become inactive within 2 years, and that 65% of those who reach the level of Clear become inactive within a year after doing so. The older a list, the more likely that a person listed on it is no longer involved in Scientology.
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Jennifer Costello in Scientology's Published Service Completion Lists

The following 10 individual completions for Jennifer Costello appear in official Scientology publications:

Jennifer CostelloPRO TRS COURSE Advance ANZO 1311997-06-01
Jennifer CostelloHUBBARD PROFESSIONAL METERING COURSE Advance ANZO 1642003-02-01
Jennifer CostelloLEVEL 0 Advance ANZO 1752004-07-01
Jennifer CostelloPOWER Advance ANZO 1752004-07-01
Jennifer CostelloOT PREPARATIONS Advance ANZO 1782006-01-01
Jennifer CostelloOT III Advance ANZO 1852007-10-01
Jennifer CostelloCAUSE RESURGENCE RUNDOWN® Source 2412016-05-01
Jennifer CostelloADVANCED SOLO AUDITOR COURSE Source 2452017-03-01
Jennifer CostelloOT® ELIGIBILITY Source 2572019-04-01
Jennifer CostelloNEW OT VI Source 2572019-04-01

Note: The dates listed above are the approximate publication dates of the magazines, which may be weeks or months later than the actual date the service was completed.

Jennifer Costello in Scientology's Publications

No entries were found in my main Scientology Statistics database for this person.

Jennifer Costello and the Clear List

No entries were found in my Scientology Statistics Project Clear List database for this person.

Jennifer Costello and Scientologist Online Sites

Jennifer Costello had a Scientologist Online cookie-cutter web site.

The link was:

Note: The individual cookie-cutter websites have been taken down, and those links now redirect to the main Scientology site.

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Jennifer Costello and WISE Directories

WISE, the World Institute of Scientology Enterprises, publishes directories listing their members.

My database does not list this person in the WISE directories in my archives.

The information on this page comes from my Scientology Statistics database. While I attempt to be as accurate as possible, errors or inaccuracies may be introduced by the source material, the transcription process, or database bugs. If you discover an error or problem, please let me know by writing to