Jim,
At no time has any serious historian claimed that "Irish children were brainwashed to hate Britain

Yes they have and I have quoted them.
Turn to page 35-36 of this book. Unequivocal.
https://books.google.co.uk/books?id=1LIYBwAAQBAJ&pg=PA60&lpg=PA60&dq=irish+school+education+indoctrinated+anti+british&source=bl&ots=6jFtelHfPN&sig=Nf3bTTHzwZiXECb8qnU_RoFW3tY&hl=en&sa=X&ved=0ahUKEwjSs53kue_VAhUKCMAKHYsZBCUQ6AEIPDAD#v=onepage&q&f=false

Or the summary on page 60.

And, here is Kinealy saying the same.
" Accordingly, in many Irish schools, a heroic but simplistic view of Irish history emerged, a morality story replete with heroes and villains. This approach, however, was subsequently challenged by the Irish academic establishment. IIn the 1930s, a number of leading Irish academics—following the lead of British historians earlier in the century—set an agenda for the study of Irish history, which placed it on a more professional and scientific basis in terms of research methods and source materials. At the same time this approach also demanded the systematic revision and challenging of received wisdoms or unquestioned assumptions. What was specific to Ireland, however, was the declared mission to challenge received nationalist myths, and by implication, although less centrally, loyalist myths. Thus, at the launch of the influential Irish Historical Studies journal in 1938, the editors stated their commitment to replace 'interpretive distortions' with 'value-free history'. To a large extent, however, this debate took place within the rarefied atmosphere of academia and failed to percolate down into the schoolrooms either north or south of the border."