Will you have a helper? If so there is an excellent 'apparition lessons" thing you can do. But you need to have a second person and a space away from the other kids, where they take their apparition test in private, for it to work.
You do apparition lessons with all the kids together. If you can borrow enough hula hoops for them to have one each that's great, if not it doesn't matter. You are doing to teach them to apparate - to disappear from one spot and reappear in another.
The three principles of apparition are Destination, Deliberation and Determination (I think!! Look these up online).
They have to concentrate on their destination - where are they aiming for ? (Inside the hoop or something). They have to be determined that they will disappear and reappear. They must move deliberately through space to get there.
Tell them to focus as hard as they can on where they are going. Then eyes closed, turn on the spot and jump, and see if they have apparated. Make them do this a few times, it helps if they get dizzy and silly!
Then, tell them they can take their apparition test. But they have to do this one at a time.
Take one at a time into the test room. You need this set up as follows:
A hoop that they are aiming for (or other noticeable, obvious spot!).
A chair or step they can stand on and jump off - and another chair or step the same that can be moved and hidden away! The first chair needs to be at the opposite end of the space to the hoop.
A helper who can either hide out of the way, or be the official "Apparition Tester" - give them a role so there is a reason for them being there.
A blindfold.
Tell them that to help them apparate better, you are going to give them some extra help. You are going to blind fold them so they can focus all their magic on thinking about their destination and not getting distracted by their surroundings. You are also going to spin them a few times so that they are nice and warmed up for apparating. Then, lastly, they are doing to jump from a slight height (chair, step) to help give them a boost.
Pop the blindfold on. Spin them, chanting Destination, Deliberation, Determination nice and loudly with them. Tell them you are going to guide them to the chair - but actually take them to the second chair, which your helper will have popped into place right next to the hoop while you have been spinning. (The spinning and chanting cover the sounds made by moving the chair into place.)
Guide them up onto the step. Tell them to keep the blindfold on or they might disrupt the magic, focus on the hoop, and then jump. Tell them not to take off the blindfold until you tell them too - again, potentially powerful and dangerous magic!
They then jump into the hoop.
Your helper quickly removes the extra chair / step.
Tell them to take off the blindfold.
They will see themselves in the hoop, and they will see the chair at the other side of the room - the chair they think they jumped off.
They will have apparated from one side of the room to the other! Ta da!
Give them their Apparition certificate!