I think the organizations will accept other nationalities as candidates, but be aware that schools often prefer native English speakers for their foreign hires. You should contact them directly. Oh, there's also Council of International Schools, a UK organization.
---- Christina Papageorgiou wrote:
> Good day to all,
> I would like to ask you if the above mentioned organizations (Search
> Associates, ISS, TIEonline) accept applicants from countries and
> nationality other than the U.S.A.
> Kind regards
> Christina Papageorgiou