Via mathstrategy.org we run the The Math Assessment Reasoning and Strategy system (MARS for short). It is a free and organized way to interview students and find out what reasoning capabilities and skills they have already developed and what strategies they use.

Often students are assessed based upon the number of right and wrong answers they give but not enough attention is given to the strategies and reasoning they use and how to develop that.

With the MARS system you can interview the student and then run their responses through the system that will generate a document detailing where the student is at this moment, what is to be expected as the next stage and a number of suggestions to get the student there.