The teachers need to know, explicitly, how the portfolios will be used. If they will be used for advancement, then the expected structure and intended scoring methods need to be explained in detail. These models may easily be adapted and provide examples for teachers developing their portfolio. Portfolios should not contain everything a teacher does. A portfolio contains carefully selected items that reflect and substantiate a teacher's expertise and achievements.
Portfolios are only one form of authentic assessment.
As such, they should be used as a part of the assessment process, in conjunction with other measures. Faculty orientations toward teaching and the use of teaching portfolios for evaluating and improving university-level instruction. Paper presented at the annual meeting of the American Educational Research Association. Successful use of teaching portfolios. A marriage made for teacher assessment.