It's exactly what it needs to be

I have had a positive experience working with Greenheart Travel to teach English in Thailand. Greenheart essentially facilitates pairing with its partner organization in Thailand that provides the actual TESOL course and placement. Greenheart offered a fair price, and helped facilitate what is essentially a hand off to the partner organization. Greenheart took care of all the fees and paperwork I needed to participate in the partner's TESOL course and placement. I can't comment on Greenheart's support system post-hand off because I haven't needed it. I did receive a follow up email which suggests they could be used as a resource.