Evaluating how well learning objectives are met?

Hi

I am designing a module and have used the Constructive Alignment approach (Teaching for Quality Learning at University (2006 3rd Ed) - Biggs, J. and Tang, C).

For evaluating the module - i would like to see how well the learning objectives have been achieved/learned.

Do you know an evaluation model which does this?  Some say that the best evaluation is looking at the students' assessment result, which i agree with.  However what if the module is currently at the design stage and needs to be evaluated?

Thanks for your - Usman