No. An appraisal does not necessarily result in a maturity level rating.
The SCAMPI A method can be enacted as either a staged or continuous implementation. When using a staged implementation, a maturity level can be awarded, but is not required. When using a continuous implementation, the model may produce capability levels for appraised process areas. A maturity level can be established through the continuous method by following the rules for equivalent staging. Your SCAMPI Lead Appraiser is trained in this activity.