Consensus and visitation moderation are applied to Year 10 and Year 11 English and mathematics with the aim of achieving comparable standards across the Northern Territory (Australia). Additional aims are to provide professional support and inservice for teachers and to improve performance standards. Moderation involves meetings of teachers and subject moderators at the beginning of the year and at intervals to reach a consensus on gradings of student achievement. To study the process in the Northern Territory, 14 observations were made of consensus moderation and moderators' visits to the schools. Questionnaires about moderation procedures were completed by 67 English teachers, 68 mathematics teachers, 32 administrators, and 274 Year 10 students, and 177 Year 11 students. While administrators found many problems with the moderation process, they generally felt that the teachers and the school benefitted from the procedures. Most students thought that moderation was a fair method of assessment, and they liked being able to compare grades throughout the Territory. Teachers thought that moderation provided them with valuable feedback, but often disliked the amount of time the process required. Fifteen tables and 25 graphs present study findings. Three appendixes contain the questionnaires for administrators, teachers, and students. (SLD)