Reviewers need to understand the relationship and division of labor between the two proposals. Focus on backlog of materials out there in the universe of Web content. Infrastructure to persist indefinitely. Reviewers step forward from the community. Reviewers examine the material, or a description of the material, in their home or office.
Reviewers test the material in their classroom with live students.
Typically two reviews. Volume throughput can be larger. Editor filters out unfair or malicious reviews. Tests carried out in inappropriate context can be auto-discarded. Unfair or malicious reviews can be swamped out by numerical weight of good reviews.