To see which teachers have not updated their Gradebook, run a Custom Report.

From PowerSchool, go under Reports and select System Reports, then click the Custom Reports tab. Under Grades & Grading, select Last Gradebook Update report.

Specify the desired number of days or use the default 5 days.

The column headings have arrows for sorting the values. The reported list can then be exported in multiple formats including MS Excel for analysis, or a PDF file to email as an attachment.