Go to School Loop or the Student Portal, view your class progress report. All assignments that are required and the associated due dates are listed. If it is on the progress report it is required, and will have an orange square in your Apex classroom. If it is not on the progress report, it is not a graded item and will not have an orange square in Apex.
Remember: School Loop and the Student Portal are ALWAYS where you want to check for the most updated, accurate grade information, NOT Apex. CUSD weights all exams, and only School Loop and the Student Portal reflect this weighting.
Grades are updated hourly in School Loop and on the Student Portal.