NoRedInk is a web-based learning platform used for teaching grammar, usage, mechanics and style to students in 4th through 12th grade. Teachers can assign a variety of diagnostic and instructional materials to their students through NoRedInk. Students may also choose to work through the hundreds of activities in NoRedInk’s online independently. The platform adapts to each learner’s strengths and weaknesses, and the portal displays color-coded heat maps to help students and teachers track progress. The majority of NoRedInk’s offerings are free to users, however the company does offer access to upgraded features through a paid subscription to NoRedInk Premium.