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Joseph Ng shows how a compositionist 's background helps create student texts in a literature class . In general , fostering a sense of community in the course helps keep students engaged . The instructional schedule does affect student grades on the four AP Examinations in this study after they have been adjusted for group differences in student ability . Once rules have been communicated , fair and consistent enforcement helps maintain students ' respect for the school 's discipline system . But successful completion of LTC does give students the skills and credentials necessary for enrollment in the Advanced Course .