[ipad] Initial setup of ipads/pods

[TechSupp]

I will have soon 3 iPads and 3 iPods to set up for school, not alot and they will only be used for assessment so only one app but the question is do I just set one apple account up (a free one with no card details) and use the same deatails for each one I set up or does each one need a separate account? I'm sure the answer is just one account so just wanting to confirm this before I start.