I am considering opening a small IT training school and getting people from abroad to come and study for a week.

I have a company and WP and if descriptions or list of activities need changing then no problem.

However I'm wondering what the situation will be for my students, they are here for a week, they wont be learning thai, do they need an ED visa? Is there a short term ED visa?

Does my company need to register with the ministry of education for students to be visa-safe? and what does that cost?

Hello i think if you open a school you have to provided a ED Visa for student for the school i think need to register with the ministry of education buth good luck

There is no requirement for your students to have an education visa.

They are allowed to study, whatever visa (or even visa free 30 days) they might have.

The education visa is only there to allow long term students to do their studying without needing to leave Thailand every 90 days!

Thank you for the clarification Monty.