> For the complete documentation index, see [llms.txt](https://guide.fariaedu.com/assessment-a-whole-school-approach/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.fariaedu.com/assessment-a-whole-school-approach/phase-two-implementation-design-and-implementation-integration/assessment-design-principles/validity.md).
# Validity
Assessments in education should be **valid** for a number of reasons:
1\. **Validity determines the accuracy of an assessment**: A valid assessment accurately measures what it is supposed to measure, such as knowledge, skills, abilities or attitudes. This is important because it provides meaningful and relevant information about student learning.
2\. **Fairness**: Validity helps to ensure that the assessment is fair to all students and that it does not unfairly advantage or disadvantage any particular group. This helps to promote educational equity.
3\. **Reliability**: Validity helps to ensure that the results of an assessment are consistent and reliable so that scores can be trusted and used to make important decisions about students.
4\. **Decision-making**: Validity is important for decision-making because it ensures that the results of an assessment are used in a trustworthy and meaningful way. For example, valid assessments can be used to determine if a student is ready to move on to the next grade, or if they need additional support in a particular subject area.
Overall, the validity of an assessment is crucial in providing accurate and meaningful information about student learning, and in making important educational decisions based on that information.
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