I understand what you're saying, but why do they need to find out? Surely if they put the work in, and if they actually learnt the curriculum to the best of their ability, then they should be proud of that. They successfully completed Year 12. Lots of students try hard, but they don't always get the mark they want (especially at the upper end, which can sometimes come down to pure luck). I think it's the wrong message to let students who try hard feel disappointed over a number, and instead let them feel empowered that they actually learnt something because they wanted to learn it. Some students will still feel disappointed if they don't get into their uni course, but this is inevitable under any system, and would reach far fewer students if no one finds out their ATAR.