A number of Universities are now compiling databases of conceptual questions by subject that instructors can use in their classes:

• NEW! Environmentally-oriented concept questions for use in science teaching (various disciplines)

  This collection of concept questions has been developed by UBC instructors, with funding from the Shell Foundation.

• The Concept Inventory from the Foundation Coalition

An extensive database of CQs in math, physics, engineering and  chemistry topic areas.

• Harvard University's Galileo Project

• The University of Toronto's Canadian In-Class Question Database

A growing database of CQs in various scienctific disciplines.  Users can also contribute questions.

• Chemistry ConcepTests from the Journal of Chemical Education
  
• Biology Problem Sets from the University of Arizona Biology Project

This Biology Project does not offer "Conceptual Questions" per se, but  valuable concept questions can be found withing the problem Sets

• Physics

A collection of Physics CQ resources compiled by Skylight's Dr Marina Milner.