If you want to know which students are pre-registered, the process is very simple.

1. Choose your building.
2. In the search box, type /enroll_status=-1
3. If you would like to filter it further by grade level, then add this to the end of the query ;grade_level=0. In the end, it will look like /enroll_status=-1;grade_level=0.
4. In this example, 0 is kindergarten. The -1 indicates pre-registered.