We've only done VT for a few months, but it makes sense to me.
I was skeptical at first - the 'not proven' part bothered me - but eventually I realized that the set of exercises to be done is so large, and the flow chart so complex, and the possible weaknesses so varied, that it would be very difficult to prove it all works.
Many of our exercises have not seemed much like homework. Our therapist trains the parent to lead the exercises at each appointment, so I would not have wanted to hand that off to the school. For us, 5 minutes in the morning and 5-10 at bedtime have worked well. Most of it has been interactive parent-child games that DD likes. Maybe others will have tips for getting it done at school.
DD seems to be progressing at about twice the rate they predicted. She had huge deficits but learns really fast when taught explicitly what she needs to do.
Hope this helps.
