Dd2 has exams after Easter, and as I understand it the exams will be published online by then. Obvs she will prepare well over Easter, she's done well so far and feels confident she will get good grades. Teachers will indicate the topics in advance.
She will obviously make her own mind up, and I think is not inclined to pre prepare model answers. So far she is also not particularly inclined to look at them in advance. It just seems hard to determine the right balance between giving yourself a heads up in preparation and making sure that you are not actually disadvantaging yourself? I'm not even sure what I would do if it was me.