If you are a student or teacher of an ATL school (i.e. schools which have gotten a grant from AIM-Niti Aayog to set up Atal Tinkering Labs), you will be also assigned an ATL UID by AIM. This is a unique school identifier only available for ATL schools. You can get your ATL UID from your school ATL in-charge. If you do not know your ATL UID, you may leave the field blank.