In previous years there has been a system where you drive in, stop briefly to let the child out of the car into the care of a 6th former, and drive out again.
The system works pretty well & the 6th formers recognise the importance of the day (most of them went through it!) and are very kind.
If you would be happier parking outside school (its pretty restricted so leave plenty of time to park some distance unless you can get someone to give you a lift) and walk them in then I would do that - just because if you are less stressed it will be better!
Do hand DS over promptly though - hanging about with them only stresses them out & generally they will be much happier once you have gone!!
It seems like a big strange place to the DSs, with lots of adults & 6th formers about so rather daunting but the staff and pupils are very kind to all the boys and certainly realise how stressful it is for them.
The exams officer at the school is in overall charge of the arrangements and is very experienced.
Make sure you read the letter carefully and get everything you need well in advance and follow the instructions on the day then the best thing you can do is to stay as calm as possible (says she
And do plan something fun for afterwards - to celebrate the huge acheivement of having gone through th exam. I bet there will be lots of 11+ers at Harry Potter that afternoon & evening
Last thing! - do not talk to DS about the exam unless he suggests it!!! It wont help you with knowing how he really did copmared to others & there is nothing to be gained by it - however tempting.
I know several people who were worried when DS said they hadn't done last page of VR etc & they got places come March.