I don't understand the fundamentals.
You may want to try some practice dates/practice flirting before you jump in with hot grad-school girls.
Taking the fundamentals analogy a step further, ballplayers warm up with some layups, and most grad school students started doing basic book exercises before moving on to million dollar research projects (forgive me if i'm being corny).
There's a certain economics to dating (sexyness, popularity, economic status [all of which roughly fall under socioeconomic status]), but there's also a fun, natural, spontaneous side which you don't want to cheapen with too much stiff socioeconomic stuff.
Maybe try some social atmospheres (off-campus party, bar(locals included), festival, etc...) and start with meeting some of the less-attractive girls. Get a bunch of numbers/phone adds. Call/msg them later. Go on some dates. Practice. -also very important- don't fall in love with the first piece of ass you get.

The date sites are good for finding quantity over quality as well. Be smart about protection in all cases.