I went to The School of Fashion Design in Boston after college- I learned patternmaking, draping, costume design, tailoring and many other classes though at that time, not really geared towards the apparel industry (costing, mass production, sourcing etc). Maybe the courses have changed. Hopefully, you like to sew, be creative, have a good eye as this is a very visual field. The industry has changed a lot over the years, with less companies/ manufacturers. NYC and LA are 1 and 2. Learning in a classroom is 1 thing but it's getting the hands on experience, such as an internship is important. Check out small, start up companies, too. Hopefully, you work with a person (or people) who are willing to take you under their wing so they share what they know. It's important to know about fabrics, dye methods as this helps to put your design ideas together. Hopefully, this helps- I'd be more than glad to give more information.