Give homework, track who submitted, and plan your syllabus by date.
Go to Assignments → New and set the class, subject, due date, and instructions.

Students submit from their portal; the submission tracker shows submitted / late / missing per class, and you grade inline.
Students see pending assignments on their dashboard, so nothing slips through.
Use Lesson plans to map syllabus chapters to dates and mark them complete — the principal can see progress at a glance.