Standards-Based Grading Links
In case you want to read real people talking about Standards-Based Grading instead of just my amateur summary.
Explanations from Teachers
http://mrsbmg.blogspot.com/2009/10/i-can-improve-my-grade-by-retaking-part.html
http://larkolicio.us/blog/?p=3
http://blog.mrmeyer.com/?p=346
http://www.mrmeyer.com/blog/wp-content/uploads/howmathmustassess.pdf
http://concurrencies.blogspot.com/2010/01/formative-assessing-to-extreme.html
http://www.asd4.org/schools/indiantrail/documents/SLP/2012-13/seven_reasons.pdf
http://assessmentforinstruction.blogspot.com/2010/03/what-are-we-grading-hopeful.html
From Educational Resources
http://www.ascd.org/publications/educational_leadership/oct08/vol66/num02/Seven_Reasons_for_Standards-Based_Grading.aspx
http://hepg.org/hel/article/545
http://academia.edu/1157096/Being_Fair_Teachers_Interpretations_of_Principles_for_Standards-Based_Grading
http://www.computer.org/csdl/proceedings/fie/2012/1353/00/06462211-abs.html
Not many, as you can see. Looking for more!