Each state has a different form and process for this. Forms can be found by searching your state using terms such as “Child Abuse Registry Clearance.”
Forms should be emailed directly to your home state, they will forward the clearance on to us. 
Illinois DCFS Registry Clearance Check (must submit by email and type PTAC in subject line) for Illinois residents.
Michigan DHS Registry Clearance Form for Michigan residents.
Indiana CPS Background Check for Indiana residents.
Out of State Background check Sites for all other states