Pakistan, Aug. 1 -- A recipient of an Oscar and a Golden Globe, in addition to being a Tony, BAFTA and Primetime Emmy-nominee, Hollywood A-lister Jessica Chastain has returned to school to earn a Master's degree. As reported by foreign media, actor Jessica Chastain, 48, who is an alumnus of the American Academy of Dramatic Arts and Juilliard School, has enrolled herself on a two-year Master's program at the prestigious Harvard University, a source revealed. According to the insider, Chastain is enrolled for a Master's in Public Administration in the John F. Kennedy School of Government at Harvard University, and has been spotted taking classes at the Cambridge, Massachusetts campus this summer. According to the school's website, "The Mast...