All debate about price and tactics aside, progession through the skills of ANY sport is a very personal thing. I teach skiing. If someone signs up as a level 4 skier and pays for level 5 lessons then when I meet them they turn out to be a level 6 skier I do NOT keep their level 5 money and insist that they give me more money for higher level lessons. I teach to them at their level. If they are in the wrong class, I move them to the right class, no extra charge. If I tried the method you seem to be talking about, I would not only go broke, I would probably get reported to the Better Business Bureau and sued (I live in the states, after all). If I were you I would run, not walk, to a different studio.
My dance instructor teaches me what I am ready to learn when I am ready to learn it regardless of where that item is listed in the syllabus.
Also, there are more men in the studio than women so the situation you described in groups is reversed. Maybe you should come to Seattle?