Depends. Removal of the appendix is only part of the story. Ruptured at removal or not? Removed by open excision, or thru an endoscope? Delay until normal feeding & stooling?These factors influence a expected return to regular activities. Your surgeon should describe the milestones the kid should meet before returning to school.
1-2 weeks. Recovery from appendectomy is dependent on the extent of disease, nature of the surgery, and health of the patient. Uncomplicated appendicitis rx'd by laparoscopic surgery...1week max; add a few days if the traditional operation. If the appendix was ruptured, your child might not have their energy back to normal for 2 weeks. A good gauge is when they don't need a mid-day nap.
APPENDECTOMY. Its up to the surgeon, probably 2 to 3 weeks ?