As one of my students approached the end of her writing course, her mother requested that I teach both her daughters grammar as well, so in 2016 the live, online Grammar Matters course began, though not yet under that name. Although I didn't originally plan to offer it to the public, I soon realized that traditional, teacher-directed grammar courses are extremely hard to find these days, whether in traditional or homeschool settings. With Grammar Matters I hope to fill another gap in the academic community. The program has two levels and follows the classic textbook Warriner's English Grammar and Composition, Level One. I offer both beginning and intermediate levels, as well as both a correspondence and live version.