Autism researcher Dr Hilary Stace does not think the numbers of children with learning difficulties is greater than it was before mainstreaming.
"I just think there is more awareness, and schools are not coping."
No wonder they are not. With one in every five children requiring particular support, every classroom must need three, four or five teacher aides. We can only wonder how the rest of the class functions with all this support going on, leaving aside the behavioural problems associated with learning disorders.
The second article in the series yesterday reported efforts to cure the disorders or prevent them developing in a child's brain. The work proceeds on the idea that physiological characteristics of the brain might explain certain learning difficulties and that the brain is malleable tissue that can be changed by exercise much like any other muscle in the body. Auckland University has a "brain dynamics lab", which is developing mental exercises and computer games to build up underperforming brain functions.
They are developing game software that they say will be able to detect deficiencies in a child's concentration, memory or number skills and the like, and feed them more games that will develop those functions. They can be useful for pupils at any level. The games are being trialled in 23 New Zealand schools.
Not all psychologists are convinced learning difficulties can be explained by physiological patterns in the brain, but the sceptics have no other useful theory to offer. Doubtless there are "multiple genetic and environmental risk factors" and stress and deprivation will play a part.
But if Auckland University's researchers can devise computer games that might reduce the incidence of these disorders in our schools, it will be a relief to all.