Hmm I voted disagree. Why?
What's the difference between a purse or a backpack?! A purse is the safety spot for girls/women where they can keep their spray or whatever that can protect them by being raped, kidnapped, etc. Also the purse is where the girls put their period stuff in and I am sure they don't want to use backpack for the half time of the day at school and purse for half of the day at outside of the school everyday.
Also when I was in high school, I use a sort of "purse-backpack mixed" which have a bag on my back with long hang on one of my shoulder, it helped me alot because I can make it like my "file drawer", where I can pick out a clean paper from my bag without smashing the papers.
Since I am out in the real world, I still use a purse or should I call it a small bag? It help me to keep my stuff organized, also I don't like wallets because I have to sit on the wallet which hurt my ass lol...