Pioneering work by groups like the MV Foundation has shown that it is indeed possible to do so. However certain flexibility could be used after the duration of special training. If a child after completing special training is 13 years old and should be in class 7 by the age appropriateness criterion, but the teacher/school feels that it would be better for the child, in terms of coping, to be in class 6, they could advise the child/parents accordingly.