Global Private Tutoring

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I knew a woman from New Zealand and she was working in the US with some type of visa arrangement and when the visa was expiring she had to leave the US but she didn't want to go back home. She got a job teaching English in Japan.  She had no Japanese, had never been there, had never been a teacher but off she went into the world of private tutoring.  I don't know how that worked out for her but apparently the contemporary equivalent has become popular.  Have any of you ever done this sort of job?
Global Private Tutoring Market to Reach $201.8 Billion by (globenewswire.com)