Any professor should be challenged. Have you asked her where's the source of her information?
Well, I've heard the same - that materials/part could be shipped from X country and assembled with final stamp in Italy or France. I've seen the promotional videos of a craftsman assembling a Chanel, Dior etc. proving its handmade. BUT these are usually exotic leathers, materials costing several thousands over regular (caviar, for example) bags. My bet is the more exclusive/intricate the bag - it's made by hand as customer is paying the price.
I would hope there is someone on tPF incognito who has first hand experience and knows the real scoop on these bags. I think many will still buy even though they know the bags are partially assembled in China for example.. I HOPE someone could prove me WRONG!
Changing the subject a bit. I've traveled to Italy and Paris. A couple of things stand out in my mind. Many of the craftsman who passed a skill from generation to generation had to succumb to mass production. Those beautiful leather jackets, Murano glass, religious wood carvings, etc. are no longer made by local craftsman, instead a majority is outsourced. China for example might be producing quality product at a cheaper price to consumer. So how does luxury designers keep up with the demand of Speedy 30's, Chanel's? Maybe some of the bags and accessories are assembled overseas. I have mixed feelings and heard a few rumors of designer goods when I was in Italy/France. I won't repeat it. Even though, I have purchased at least 2 Chanels (one seasonal/one classic) since my visits.
Chanel is like sin, we can't get enough of it.