I was raised as a witness and NEVER had any encouragement to go to college because "Armageddon's at hand". After I got married I realized that I would have to have some formal education to raise my family appropriately. I opted for a two-year degree in the medical field. I received much the same criticism that you have and was counseled about 'putting Jehovah first'. I told them that would be hard to do if I would have to work 24/7 to pay my bills. I have never regretted once my decision. I went on to get my bachelor's degree and then my Master's in Business and have never looked back. I think a big reason that the elders don't want you to do this (or others in the congregation) is because education is knowledge which = power. They don't want you to be more educated then them, or may feel resentful because THEY have never gone to college. A college education teaches you to think for yourself and they don't want that. Why do they not understand that many times you have to put in more hours at a lower-paying job then if you spent a few years getting an education and could then work a 'normal' work week.
I also agree with the post about being a single mother after a divorce. This happens so much that I always tell ANYONE I know who is female and has the opportunity to get an education!! If I had not, because I was convinced that "Armageddon was near", I would have spent the last 15 years of my life struggling every day to simply make ends meet. Instead, I've had a rewarding career in health care and now health care administration where I help people every day. I never regret going to school. I would have regretted for the rest of my life letting a bunch of self-righteous, controlling, narrow-minded individuals keep me from advancing myself. Not everyone wants to be a window-washer or janitor. That doesn't make you materialistic. Being intelligent and wanting something more is not something to be ridiculed, except by those who will not or cannot think on their own and pursue what they want to do.
I've been out for 10 years, and I won't tell you what to do, but DO NOT put your future on hold. Go to school now while you can, unencumbered by a husband or kids. It gets a whole lot harder then....