Be a skilled assessor!
Great assessment resources...
How Should We Measure Learning?
Eduphoria article on the many forms of assessment
Effective Grading Practices in Middle School
Hanover research report
School Using Standards-Based Grading Practices
Video explanation and example of a school using standards-based grading
Grading Student Work
Vanderbilt site
Grading Writing
Analytic and Holistic Scoring of Writing
"How We Got Grading Wrong"
A teacher's take on standards-based learning