Typically a severity rating for each day is used to measure progress. However, speech-language pathologists can use variations. Examples of variations are provided in the Lidcombe Program Treatment Guide. What is important is that the speech-language pathologist is clear about how the parent is giving the ratings so the information that the parent provides can be interpreted properly. It is important that the ratings are used in a way that is consistent and meaningful.
The only way to do this is to consult with colleagues, because the scale pertains to the clinical population of stuttering children. For example, if you think a child’s stuttering warrants a severity rating of 7, then you might check that colleagues agree with you.