Students at Northwestern Pritzker School of Law can head west this spring, while taking business classes and working in a technology firm’s legal department.The law school’s new San Francisco Immersion Program will offer students the chance to spend a quarter in the Bay Area, where Northwestern opened a satellite campus last year.Emerson Tiller, who is the faculty adviser for program, said Northwestern Kellogg School of Management began a similar 10-week immersion program for its graduate students.“We had …