(Poets&Quants) -- Dimming employment prospects on Wall Street may be causing some jitters on campus, but the mood at Harvard Business School is decidedly upbeat. Many students came back from their summer internships with lucrative job offers in hand, and for the first time in the school's history, the entire first year class of some 900-plus MBA students is about to embark next month on an eight-day global immersion experience. "We are feeling the pressure of final exams and projects," says Jehan deFonseka, a second-year student who is also editor of The Harbus, the B-school's student newspaper. "One of my professors, Joe Lassiter, gave us the advice, 'Die exhausted, not bored.' So far, this year has lived up to that belief." And now the school is about to get a pre-holiday present of sorts. For the second consecutive year, Harvard bested all other business schools for the distinction of best MBA program in the U.S., according to a new ranking by PoetsandQuants.