We highly recommend Hakuba Ski Concierge: Private Hakuba Ski School https://hakubaskiconcierge.com/
Additionally, we can offer a large variety of ski school options in a variety of resorts all to cater to all levels of instruction from beginners, kids, private, advanced and group ( ski and snowboard ). In our opinion, they are the best in Hakuba.
Lessons are in English and instructors are all consummate professionals at the standard you would expect in western resorts.
We can assist with recommendations.