Common Core Aligner (ELA) is a GPT that focuses on aligning lessons to Common Core ELA (English Language Arts) standards. Designed by checkfu.com, this tool is deployed on the ChatGPT platform, requiring the use of ChatGPT Plus for operation. It is primarily aimed at educators and curriculum designers who are in the process of developing or refining ELA lesson plans in accordance with the Common Core State Standards, a set of expectations for student knowledge and skills that they should master in respective grades. The GPT's functionality assists users in ensuring their educational content is in alignment with these standards, thus maintaining the quality, relevance, and efficiency of the learning experiences provided to students. The tool's interface initiates with a welcome message, setting a friendly user experience. It then progresses with prompt starters to guide users, providing structure and clarity throughout the process of aligning lessons effectively. Taking advantage of the powerful capabilities of the GPT model, the Common Core Aligner (ELA) aims to streamline and enhance the task of creating standards-aligned educational content in ELA, therefore supporting efforts to elevate the quality of education.