Academic selection perpetuates divisions in wider society in Northern Ireland, according to a research paper by academics from Queen's University (QUB).
They found that transfer tests and the grammar school system "disadvantages the already most disadvantaged".
The paper called "Is academic selection in Northern Ireland a barrier to social cohesion?" has just been published.
The first transfer test of 2022 is due to be held on Saturday.
There will then be further tests, used by grammar schools to select pupil, on subsequent Saturdays.
