Hi again.
Nobody at CVI is measured in octaves - its not about range at all but about the singer/singing teacher understanding the anatomical and educational processes of working with the voice.
When understanding this, one can continuously through life solve other´s, as well as one´s own, vocal issues.
In the teachers personal vocal training they work on vocal abilities like everybody else and are told to focus on their "weaker" areas, but theres no "octave-standard" as this surely wouldn´t result in better teachers.
But a certain skill level as a singer and/or as a vocal coach is required to attend the course.
This will be assessed in connection with signing up for the course.
About the 3 year singer/singing teacher course:
You don´t have to move here, but "simply" attend 6 courses a year for 3 years

Admin. at CVI is very flexible and try to make travellers from far away receive 2 seminars in a row, meaning that these individuals only travel 3 times a year instead of 6.
"Terrible" singers in the sense that their technique is questionable but still they manage to have healthy careers.
Best regards
Kaare