Confronted with various assessment-related decisions on a daily basis, educators should develop an increased awareness of the possibility of assessment bias in both teacher-developed and commercially developed assessments; therefore, it is essential for educators to consider their ethical and legal responsibilities when determining what and how to assess.

• Explain why teachers need to be knowledgeable about the concepts of reliability and validity in assessment.
• What information might you share with a new teacher regarding reliability and validity in assessment and how they're applied in the classroom?
• What is the appropriate level of effort that teachers should take to ensure that tests are fair and unbiased?