This guide provides instructions on how to pass test taker data to ClassMarker at the start of tests. It outlines the available API and webhook options for receiving test results in real time, along with methods for allowing users to view test results without logging into ClassMarker. The document explains how to integrate user IDs with test results and the parameters required for submitting this data. Key features discussed include tracking users, limiting test attempts, and recording users' IDs by appending them to the test link. It also provides an overview of API usage for requesting test results, including required keys, permissions, and response formats. Furthermore, the guide details the webhook options for real-time delivery of test results, providing data such as names, scores, and questions. Lastly, it covers the setup for view results URLs, enabling access to test results without requiring a ClassMarker account.