Training advice from a seasoned trainer: After everything is booked & paid for. It really comes down to how good your trainer is. All of the schools are teaching the same piece of software. The difference really comes down to how it is delivered. Don’t be afraid to ask to speak to your trainer before you book your course.
A quick 5 minute phone call and you’ll know if the trainer is any good. More importantly you’ll know whether the trainer and you are compatible. A check to do is to see if the trainer is an Adobe Authorized Instructor. What this means is that the trainer has completed the Adobe Certified Expert exam and has some type of teaching qualifications. Again this is no guarantee but at least this means they are knowledgeable in InDesign.