I'm taking on February the FEAST at EUROCONTROL, so I did some research about this.
The thing is, for EUROCONTROL, you can only do the FEAST at Maastricht... Other companies use FEAST for their own training, so EUROCONTROL sends the material to them.
The test differs from place to place. For example, you can take a FEAST test where you live and you can pass with lower marks than if you took it at Maastricht, but you won't be able to use the FEAST that you have done outside Maastricht in EUROCONTROL.