Throughout the site, you can click on the gold-colored terms to see their definitions.



1. One of the training courses done to become an auditor. These are shown along the left-hand side of the Grade Chart.

Level vs Class vs Grade

These 3 words can be confusing until you get the hang of them.

Level is the word used when someone is taking an auditing course. For example, “Mickey is doing her Level 0.” That means Mickey is taking the auditor training course called Level 0.
Class is the word applied to someone who has completed an auditing course. They are then certified and classified as that kind of auditor. For example, “Harry just finished Level II. He is now a Class II Auditor.”
Grade is the word for the auditing actions done with the preclear. For example, “Now that Sophia has completed her Level IV training, she has gotten certified as a Class IV Auditor. Next she will deliver Grade IV Auditing to her preclear, Alan.”

Auditor Training and Processing Names


Academy Level 0 aka Hubbard Recognized Scientologist (HRS) — teaches the basic skills needed to audit. Once that portion is completed, the auditor learns the techniques used to audit someone on ARC SW and  Grade 0.

Academy Level I aka Hubbard Trained Scientologist (HTS) — in this course the auditor learns to resolve problems and enable a preclear to spot and dissolve sources of problems in life. The auditor also learns how to audit objectives processes.

Academy Level II aka Hubbard Certified Auditor (HCA) — educates the auditor in processes to help with responsibility and integrity. And specifically trains one in how to address overt acts and withholds.

Academy Level III aka Hubbard Professional Auditor (HPA) — trains the auditor to process upsets that are holding the preclear down in life. And learns to audit changes that have had an adverse effect on the preclear.

Academy Level IV aka Hubbard Advanced Auditor (HAA) — instructs the student auditor in processing fixed conditions in life.

There are more training courses beyond these, but they are no longer referred to as ‘levels’. You can see the names of them on the Grade Chart.

2. One of the Operating Thetan (OT) levels on the processing side of the Grade Chart. There are 8 OT levels. A preclear must have reached the State of Clear before moving on to the OT levels. The OT levels are kept confidential until begun.

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