What do I do if my left AirPod got stolen

Buy a replacement.

AirPods Replacement, Repair, and Service - Apple Support

Contact the school and/or police. If you can't get it back, click here and use the link to order a replacement.

(261871)

Kaito39 wrote:

I can’t afford replacements

Hello~ Unless someone finds it and turns it in somewhere as *Niel* suggests…your only choice is to buy a new one.

~Katana-San~

If thefts like this are a problem at your school, buy cheap earbuds to use when you're there.