Maturity models

Answer:
I am sorry but there are no evaluation ranges or range of application for ISO 27001, you can comply or not comply with ISO 27001, but not by ranges.

Anyway, you can use maturity models for the implementation of security controls, but the security controls really are from ISO 27002, not from ISO 27001 (although you can see the security control of ISO 27002 in the Annex A of ISO 27001).

This article can be interesting for you “Achieving continual improvement through the use of maturity models” : https://advisera.com/27001academy/blog/2015/04/13/achieving-continual-improvement-through-the-use-of-maturity-models/

And also our course can be also very interesting for you because we give more information about the implementation of ISO 27001 “ISO 27001:2013 Foundations Course” : https://advisera.com/training/iso-27001-foundations-course/