Your teacher is amazing.
Accutually I can't do that. But I think it's a good way.
Maybe I don't have many clothes. I wear some clothes through several seasons because I wanna save money to spend it for other thing and also save time to choose favorite clothes(it takes too long lol).
I prefer having too many clothes to having few good clothes(expensive, high quality and good design).
But I spend too long time to decide what I wear everyday. So your teacher's way, planning for what she wears in each year in advance, is very good to save useless time.
In my country, Japan, there are many seasons and differences of temperature in one year. So tell the truth, it's little difficult to buy those each season's clothes at once.
Anyway I wanna try her way..