The State of Mississippi authorized the construction of additions to three of the state's academic libraries. At the University of Southern Mississippi, planning for an addition raised the question of assignable study space. Lockable individual study rooms (carrels) and group study rooms were planned, and questions of how to assign them and rules for their use arose. A survey of 52 public academic libraries examined their assignable study space policies to aid in writing a policy for the University's Cook Memorial Library. Nearly every response indicated that the number of carrels available was not sufficient to meet the requests for assignment. Although demand was great, many libraries indicated that actual use was low, with carrels frequently unoccupied. A majority of carrels were assigned to faculty, and most policies provided an academic year or calendar year assignment. Carrels were usually assigned on a first-come, first-served basis, with library personnel making the assignment. Policies for group study rooms were most often based on the staffing available to enforce the policies established. It will be necessary to post regulations for use of carrels and group study rooms and to make all policies clear to potential users. (SLD)