Present perfect passive vs. Simple past passive (Is there any difference in terms of meaning?)
1) The test has been prepared by the principal.
I got it: The principal prepares the test throught the many years.)
2) The test was prepared by the principal.
I got it: The principal prepared the last test because the teacher was sick for exemple.
These were that I got it, but I don't know if I'm wrong and both the sentences have exactly the same meaning?!?!?!