Currently, individually assigned materials sync over to the SIS as being visible to all students in the course. For a teacher using Multiple Grading Groups in a course, everything displays (or is hidden) correctly for students, including the Schoology Gradebook. HOWEVER, with a sync to the PowerSchool SIS grade book, the material is visible for ALL students. There is no way to communicate with students/parents that this material was NEVER ASSIGNED to these students; it just appears as not completed.
There NEEDS to be a connection to the PowerSchool SIS Gradebook (especially PowerTeacher Pro Gradebook) to display that material to ONLY the students assigned to that material.