French immersion is an educational approach where students are taught subjects in French rather than their native language. This method aims to help students become fluent in French while learning core subjects like math, science, and social studies. In a French immersion program, students typically start learning in French at a young age, often in preschool or kindergarten. The goal is to create a bilingual environment that encourages language acquisition through everyday activities and interactions, making it easier for students to grasp both the language and the content being taught.