With Mid-years looming on the horizon, George H. Chase, Acting Dean of Harvard College, yesterday grimly reminded students of the official ban on commercial tutoring schools.

"Inasmuch as students have recently received an advertisement offering reviews in several Harvard courses," he said, "it seems wise to call to their attention Section 14 of the Regulations for Students in Harvard College, viz.: 'A student is liable to disciplinary action if he makes use of the services of a commercial tutoring school, unless for very exceptional reasons permission is given by the instructor in charge of the course in which he desires assistance and by the Dean of Harvard College.'

"The term 'commercial tutoring school' has been defined as an establishment where (1) material is compiled for reports or papers; (2) reviews of course lectures and (or) reading are offered to groups of five or more students; (3) assistance in interpreting course lectures and (or) reading is offered to students who have not first honestly attempted to do their own work; (4) assistance is offered to any student for more than six weeks; (5) notes purporting to condense course lectures and (or) reading may be secured."