I've studied Japanese for over thirty five years, and have had the opportunity to have been blessed with some really amazing teachers. I attended college in Japan, and lived there for a total of about six years. I passed N1 of the JLPT in December of 2000, and I'm still studying to be the best I can. My work takes me there frequently, and I feel very comfortable with the language.
That being said, I know that I always have the capacity for improvement, and I wanted to keep sharp despite long absences from Japan. The language and culture evolve and change, and so do the tools by which we can study. I used to flip through paper dictionaries when I first started, and now I can find anything on any subject in nearly any amount of detail. I'm a natural autodidact, but there are few things that can take the place of an incredible teacher.
Sensei is exactly this: she is able to - on a weekly basis - come up with lessons tailored to precisely what I'd like to learn, and we're able to go on tangents that still fall within the lesson, so I often set out to learn more than I thought I would.
Her thoroughness is uneclipsed: I've never had a teacher prep for lessons like she does. I believe she told me, one time, that this was a source of ire for a language school that she worked at; she spent too much time prepping. But, everything she preps is vital, and nothing seems extraneous or just "filler." It's all useful, and the thrust given to the lesson by the materials she prepares is frankly somewhat magical sometimes.
It has been said that the unfortunate thing about the world is that people will live their lives not knowing what they should do. Luckily, Sensei found what she should be doing: she's a teacher, innately, who is witty, understanding, and naturally encouraging. Often, I get the feeling she would teach even if she wasn't being paid, because she seems so home at it. And that's the reason that if you're looking to learn Japanese, there is simply no better value for your dollar than having Sensei teach you.
I cannot recommend her enough, and I've learned from great teachers throughout my career. If you've ever thought about studying Japanese seriously, you can do no better than Noriko. read more