Interesting counterpoint - more than one test-giver has told me that, no, in fact, your 'score' doesn't change. I don't believe that for a moment, because taking the test is rather mood dependent - I've taken MB multiple times, and while overall, I come out similar in some areas (always an I, for example), the T and F have changed on occasion. It make total sense - my view of things changes over time - but these administrators were rather adamant that it doesn't change.

I guess if I'm an INTJ, taking the test the next day, I wouldn't expect to be an ESFP, but... over 10 years, I wouldn't be surprised to see an INTJ get a different 'score'.