EVANSTON — Sally Evans, currently a White Anglo-Saxon Protestant senior at Richard B. Russell High School, received a rejection letter from Northwestern after applying early decision. After mulling it over for several weeks, she decided Thursday to take a stand for what is right. “I’m not racist,” the teen said. “I just don’t think it’s fair that I worked so hard and still didn’t get into Northwestern. If the quotas from the ‘60s were still in place, this never would’ve