This particular institute has received negative feedback on and off over the years, and you should be wary of it.
Check the
ESL Teachers Board to read some of the comments people who took their course left there. I's worth a read.
I would have given you the direct link to that page but when I try and paste it in it gets jumbled up with some meta text. So if you are interested just P.M. me and I'll email it to you.