Even if you have very little prior knowledge, it might be useful to take an entry test. This way you are sure to start in the level most suitable for you. It is not possible to take an entry test or to change levels once the course has started. An entry test is certainly advisable if you learnt the language a long time ago or if you haven’t spoken the language for years (for example, if you did French or German at secondary school). Of course, it makes no sense to take an entry test if you can remember only a few words or phrases. Try not to overestimate or underestimate your abilities here. If you are still in doubt, it is best to take the entry test.