Students are required to have at least the following Japanese proficiency and have to be currently learning Japanese (attending classes or self-study).
JLPT N5 or
CEFR A1 or
Completed "Minnano Nihongo Elemenary I" or "GENKI Elemenary Volume I" or equivalent
The number at the end of the course title indicates the appropriate level. e.g. "Pronunciation 2/3" is available only for level 2 or 3 students.