Measuring Teaching Effectivness
objective, quantitative measure of student learning  


This is impossible today and probably always will be.  "Learning" is too broad for a single metric.  Form a specific hypothesis, then test it using a pre-test and post-test.  Ideally, you should use two groups of students, one of which receives an intervention.  The other group is a control.

You can get free training courses here: https://www.cirtl.net/p/cirtl-programming#Courses (see "Teaching-as-Research")

Do not forget to include qualitative information and feedback from peer faculty.