> For the complete documentation index, see [llms.txt](https://eval.playbook.org.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eval.playbook.org.ai/user-experience/how-to-evaluate.md).

# How to evaluate

- [How is Level 3 evaluation performed?](https://eval.playbook.org.ai/user-experience/how-to-evaluate/how-is-level-3-evaluation-performed.md)
- [Identify outcome metrics](https://eval.playbook.org.ai/user-experience/how-to-evaluate/descriptive-analysis.md)
- [Define guardrail metrics and measure potential harm](https://eval.playbook.org.ai/user-experience/how-to-evaluate/defining-guardrail-metrics-measuring-potential-harm.md)
- [Consider conducting experiments to improve the selected key metrics and running process evaluations](https://eval.playbook.org.ai/user-experience/how-to-evaluate/why-arent-thoughts-feelings-and-behavior-changing.md)
- [Why Aren’t Thoughts, Feelings, and Behavior Changing?](https://eval.playbook.org.ai/user-experience/how-to-evaluate/user-privacy-and-security.md)