It looks like job4teacher.com will be out of business soon. It also looks like that they have some explaining to do. For example, why do they have a pedophile on their web site.
http://www.job4teacher.com/ApplicationforTeachers.html
Here is the application page.
Short and sweet, but do you see one question about any criminal record there?
I don't know if not asking somehow makes you exempt from criminal or civil damages, do you?
They sure don't seem to represent anywhere these people could have criminal records.
I haven't yet read hire these people at your own risk anywhere either.