Great, but...

This is a great program, but it's best suited for those who don't need much support once they arrive in country, in my opinion.
Not only do you pay for the opportunity (and receive that amount in monthly stipends), but so do the schools that you are placed with, leaving the volunteer in an awkward position where the schools request more and more of your time not understanding why you aren't willing to work full-time.

As for the WorldTeach office itself, they do their best, but having one or two people that are in charge of supporting 20-40 in-country volunteers is taxing and (if you require more "hand-holding") can leave the volunteer feeling forgotten and frustrated.

Overall, you get what you put in, just make sure you don't overtax yourself with all of the requirements (from the office and/or from the school).