Before rewarding policyholders with the student away at school discount, Insurers verify that your kid lives at least 100 miles from home. They will ask you to prove it. The form this takes will likely depend on your insurer. The college address is the most obvious option. Your auto insurance provider can always verify the address on its own to ensure the mileage is correct. Be prepared to prove your kid's age. Some insurers place age limits on who qualifies. The most common ages are under 22/25 years of age. Check your insurance carrier’s rules to see if there’s an age limit.