Check to see if the school is set to Technical School = Yes. Many districts will temporarily set their middle school and high school (for lower grades) to Technical School = Yes in order to schedule students into Teams. This is often left as Yes after scheduling is completed. If your school Rotation is not set up as Tech/Vocation school then the scheduling report will not know what to use for Period and Rotation and the schedules will print out blank. Setting Technical School = No will fix this.

Go to Administration > School Resources > School Profile > Click on the appropriate school > Change Technical School = NO.