A simple structure that may be appropriate for these exams:
"Some/one might/may suggest that <problem from other side>"
"However, this is not true because/research suggests/the reality is/the issue with this is that <your rebuttal to that point>"
"Hence this is an invalid point to make / further affirming the stance that <your contention>"
A simple example illustrating that structure (trying to write and argue at a yr8 level):
Some may suggest that if all schooling was single sex, there would be inherent and somewhat awkward social interactions between both genders, resulting in a situation that is not favourable for future family and working life. However, the issue with that is that school only encompasses a mere six hours out of a possible twenty-four in a day and also a mere thirty-odd weeks in the year, leaving a substantial amount of time left open to socialise with the opposite sex, not including the combined-gender social events for schools as aforementioned in this essay. Hence, this is an invalid point to make as it is not justified well by the reality of the proposed situation.
I have added this knowledge to
Last minute tips for the selective school exams. In future, you will get faster replies if you post in that thread as I tend to not look all over the forum
