To see how often someone logs into Parent Portal, run a Custom Report.
From PowerSchool, go under Reports and select System Reports, then click the Custom Reports tab. Under Security, select Student/Parent Login Count report.
Specify the desired date range, number of logins, grade levels and login type for the login count.
The column headers provide 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.
Finally, the option to Make these the active selection of students has multiple uses including all of the Group Functions available to PowerSchool.