Classroom Captioner is a project designed to enhance accessibility in educational environments by providing live captions for lectures using Deepgram's speech-to-text capabilities. It allows lecturers to easily set up a captioning system by opening a web application, creating a room, and validating themselves with a lecture key. Students can join the room using a code to receive real-time transcriptions of the lecture. The application utilizes Node.js, express, and socket.io for server management and real-time communication, while Deepgram API keys facilitate transcription. The lecturer's microphone captures audio, which is transcribed and broadcast to participants in specified rooms. The project aims to create an inclusive classroom experience by offering a text representation of spoken content, thereby supporting students who need or prefer written transcripts. The full implementation and deployment instructions are available on GitHub, enabling others to replicate and customize the setup for their own use.