Channeler vs. direct FBI submission
An FBI-approved channeler collects your fingerprints electronically and submits them to the FBI on your behalf, usually returning a result in a matter of business days. Submitting directly to the FBI by mailed fingerprint card is typically slower and less predictable, sometimes taking several weeks.
For teach-abroad purposes, most people use a channeler specifically because of the speed, especially when a school has given a start date that doesn't leave months of runway.
