ALTs are not required to have Japanese language proficiency at the time of application or in order to participate on the JET Program. For those who are selected to become JET Program participants, it is expected that those who do not have experience studying the Japanese language will prepare by studying Japanese prior to arriving in Japan. If you do have this experience, it is beneficial to note it in your application.
CIRs must have at least semi-advanced to advanced level Japanese proficiency in order to qualify for the position on the JET Program. Please carefully read the proficiency guidelines in order to determine your level. Proof of language proficiency is not required at the application stage, though if you have passed a proficiency exam such as the Japanese Language Proficiency Test (JLPT) it is helpful to document it for the application. CIR applicants must honestly self-assess their ability in the semi-advanced to advanced level on the application to be considered. This ability will be tested at the interview stage of the selection process.