This means that it would be a negative mark if the school doesn't teach takedowns because the instructor can only win from his back, or if the school doesn't do groundwork because the instructor only knows uchimata.
However, I am generally cautious of an instructor who can only teach "their game". This means that it would be a negative mark if the school doesn't teach takedowns because the instructor can only win from his back, or if the school doesn't do groundwork because the instructor only knows uchimata. It's not a disqualifying error, but it's something to take into consideration.