I'm not convinced that there is a magic mark on the GL which is indicative of the result in the actual exam. GL papers are super hard and I can't recall that my son was consistently scoring even 80/85% .
At this point in time, the scaremongering and stories reach epic proportions, as does the stress. Nothing more to be done, than just kick back now and give the kids a break before the exams start.
I wish one and all of your children the very best of luck in whichever exams they are taking. I feel for the ones taking the Alty/Sale combo as they are so close together, but then everyone is in the same boat.
For Alty , just allow lots and lots of time, don't even attempt to park anywhere near the school and keep the kids positive. The queues and melee are a bit daunting, but its very well organised. They can't start till every one gets there, so no prizes for being at the front of the queue
Nearly all over now.