This document is a guide detailing the essential criteria for organizations aiming to achieve a Leadership-level score in the CDP Forests assessment for 2024. It outlines the requirements necessary for inclusion in the A List, which recognizes organizations for their effective actions in mitigating climate change, water security, and deforestation. The guide presents the new checks introduced for the 2024 assessment, emphasizing the need for comprehensive reporting on key data points. It specifies that the essential criteria will only be applicable to organizations responding to the Full Corporate Questionnaire, excluding those in the Financial Services sector. The document further breaks down the essential criteria into various components, linking them to specific questions from the questionnaire and detailing the scoring methodology. It aims to ensure that organizations disclose relevant information consistently, thereby clarifying the expectations for achieving leadership status in environmental performance.