'Truisms' abound in evaluation here are some from
Scriven, a renowned writer on evaluation.
'Pure outcome evaluation usually yields too little too
late; and pure process evaluation is usually invalid or premature.
Non comparative evaluations are comparatively useless.
Formative evaluation is attractive, but summative evaluation
is imperative.
'Pulling it all together' is where most evaluations
fall apart.
Validity does not ensure credibility.
Validity and credibility do not ensure utility.
Program evaluation involves research and ends with a
report, but research reports are negative paradigms for evaluation
reports.
Preference and commitment do not entail bias.'
From Scriven, M. S. (1993). Hard-won Lessons in
Program Evaluation (New Directions in Program Evaluation, No. 58).
San Francisco: Jossey-Bass.
[One could add
'There is no one 'right' way to evaluate. Use the approach
(or approaches) that suits you, the questions you wish to explore,
and the particular evaluation situation.]
Let's hope all goes well. Finally remember that a plan
is just a guide map or tool to get you to an end destination. Plans are
not meant to be immutable, nor are they meant to 'take over' and get
in the way of the actual enterprise.