When it comes to standardized testing, I find that most of my students knew the material, but just didn't understand the question itself. One thing that really worked to increase test scores with my students is to teach them the "test terms" they will be asked on their standardized tests.
This is great test prep tool on the most frequently used (and confused) terms in standardized tests from grades 6-12.
28 Task Cards
28 Flash Cards
*Task Cards can be used with any text or passage
*Flash Cards can be cut out and used for Interactive Notebooks
*Common Core Aligned
Now includes outline and guide for open response questions!