Students’ Absences – New Procedures Step 1. Call the office to report absence and its reason: 907-345-4814  for K-6th grades OR Secondary Attendance Line 907-644-2257 to leave a message or 907-868-1203  for 7-12th grades. Step 2. If the reason for the absence is sickness, you can request a follow up call from the GCS Nurses. […]