This paper describes a procedure designed to enhance the effectiveness of teaching writing skills in intermediate and advanced English as a Second Language (ESL) classes. The procedure consists of a correction sheet and a testing technique. The student prepares a written assignment which is corrected by the instructor with regard to the student's individual ability. A correction sheet is then prepared by the student. The instructor compares the correction sheet with the original assignment and then prepares and administers individualized tests based on the correction sheets. Although additional work is required of the teacher in the preparation of individualized tests, the advantages of this method are that: (1) each student is motivated in an individualized way to overcome particular composition problems; and (2) a positive approach is taken in that strong emphasis is placed on correct forms rather than on mistakes. (CLK)