Ambleside schools are accredited by Accreditation International, an internationally recognized accrediting agency.
ASI checked with them regarding the accreditation of home schooling programs.
At this time, no internationally recognized accrediting agency accredits home school programs. They do accredit distance learning, which may be done at home, but is a different model, as the primary instruction is usually on-line and not by a parent.
While some homeschooling groups may claim to be accredited, they are not accredited by a recognized accrediting agency.