This study of the social, geographical, and disciplinary composition of the University of Paris in the early fourteenth century--the most detailed of its kind ever attempted--is based on the reconstruction of a remarkable document: the financial record of tax levied on university members in the academic year 1329-1330. After a thorough examination of this document, the book explores residential patterns, the relationship of students, masters, and tutors, social class and levels of wealth, interaction with the royal court, and the geographical background of university scholars.