Peer observation is the most common method of engaging peer voice in evaluation. There are many well-researched observation protocols available; many of these have been adapted by units here at CU Boulder. Examples can be found here. Please contact us if you are looking for a particular resource that cannot be found on our site.
The University of Colorado, through the Arts & Sciences Support of Education Through Technology (ASSETT) program, offers the Visualizing Instructional Practices (VIP) service. Upon request, ASSETT staff will conduct a classroom observation using the Classroom Observation Protocol for Undergraduate STEM (COPUS).