Some Stereotypes are Universal: First Impressions of Classes

I have a grand mishmosh of classes over here which confuses the Spaniards to no end. Here you only take classes in your respective college, or faculty as they call it, and not across multiple colleges within the university. For example, I am an engineering major so if I were a Spanish student I would only take classes within the engineering college. However, I have a classes within the faculties of: Languages, Law, Economics, Humanities, and Engineering. As a result of this I've gotten to observe a variety of students within different departments and I've come to this conclusion: some stereotypes/personalities are universal.
What I mean by this is at the end of the day an engineering student is an engineering student and a business student is a business student just as an engineering class is full of engineers and a business class is full of business students.
That may seem like stating the obvious but consider this. How often do you see a female engineering student go to class in heavy make-up, mini skirt, and heals or shorts with tights and heals? Now how often do you see a business student or humanities student not do this? This may not seem significant and perhaps it's not but I was amused nonetheless.
In my non engineering classes the girls are very liberally dressed and you can tell they spend a great deal of time getting ready in the morning. The guys just as in the U.S. where jeans and a t-shirt. The teachers also seem to have a livelier personality and are upbeat in the non-engineering classes. This is the same impression I have of the U.S. They also are often younger. However, in my engineering class I have an older professor and the students are very conservative. I was quite possibly the only girl with make up on and felt horribly underdressed. About half the guys were either in suits or collared shirts and nice sweaters and the girls looked very professional.
At the end of the day none of this matters. I was merely amused by the similarities amongst the steroetypical personalities of the engineering student versus non-engineering student.
On a different note my classes are interesting for the most part. There is only one I am not that enthused about but I've only gone once so it deserves a second chance. I am taking SPanish for Exchange Students which is a lot of fun. I also am in one class in English which is called Spanish History and Culture through Cinema and Visual Arts. I think this one will be particularly interesting and easy :). I also am in Power and Politics in Modern Spain which is a three hour lecture in Spanish and there were no visual aids last class just a teacher talking in Spanish for three hours. Also, I didn't know that modern meant 15th-18th century and not present day. I'm also in a Spanish class on European Union Policy which I expect will be rather interesting and fairly easy. My last class is on the Economics and Exploitation of Transportation and is in Spanish as well. I'm glad I decided to take one engineering class to get a sense of what that is like over here.
Anyways, that is all for my rant on classes and stereotypes. Adiós!