GradingAssignment RefId TeachingGroupRefId StudentPersonalRefIdList SchoolInfoRefId GradingCategory Description PointsPossible CreateDate DueDate Weight MaxAttemptsAllowed DetailedDescriptionURL DetailedDescriptionBinary AssessmentType LevelAssessed AssignmentPurpose SubAssignmentList RubricScoringGuide PrerequisiteList LearningStandardList SIF_Metadata SIF_ExtendedElements