Yes, it is OK- I remember reading it in some of their information. They no longer use it as a testing item- you'd have to go back a very long time to find If I was/were being tested.
But if I can third things- were doesn't annoy people who say was, but was can annoy some who say were, which is why people say things like 'were' is preferred in formal usage. Make a pedant happy and your world could become a better place- job interviews, etc. ;-)