In order to offer a valid evaluation tool for Open Educational Resources, OER Commons has joint forces with Achieve, a non-profit organisation whose main purpose is improving college and career readiness in educational institutions. The final outcome of this cooperative effort has been an online evaluation tool, hosted now by OER Commons and fully integrated within both parties' resources. More information is available here.
The following is just a "skeleton" version of the set of rubrics from the tool, but it might still be useful to quickly evaluate an OER:
Each rubric is to be evaluated independently and according to the following scores: