Letrus Platform

Letrus is a pioneer and UNESCO award-winning edtech company that has been using artificial intelligence to improve students’ reading and writing skills at scale since 2017. Over its trajectory, Letrus has supported the literacy development of thousands of students and is currently implemented across states and municipalities throughout Brazil, working closely with public education systems to reduce learning gaps and promote equity. Our Literacy Program addresses these challenges through an AI-driven, evidence-based platform designed for students in middle and high school levels, that connects every layer of the education system, from students to ministries, into a single ecosystem for literacy improvement. Developed in Portuguese, Letrus combines advanced artificial intelligence techniques, including natural language processing, adaptive feedback models, and generative learning scaffolds. It supports reading comprehension and written expression, enabling equitable access to effective literacy instruction across diverse contexts. At the student level, the platform provides individualized real-time feedback on reading and writing tasks, helping learners identify comprehension gaps and refine expression step by step. It also enhances inclusive instruction by generating targeted insights into students’ learning profiles, including those with learning disabilities, language development delays, or from socioeconomically disadvantaged backgrounds, allowing differentiated pedagogical strategies within mainstream classrooms. At the teacher level, it saves time and improves instructional precision by showing class trends, common challenges, and recommended teaching strategies tailored to local curricula. At the school and district levels, Letrus offers actionable dashboards that inform principals and coordinators about literacy progress, supporting teacher development and data-based interventions. At the system level, education secretariats and ministries gain anonymized insights into regional trends, enabling equitable policy design and large-scale monitoring of learning outcomes. Letrus’ impact and rigor have been independently validated. A randomized evaluation conducted by J-PAL/MIT, one of the few global impact studies on an edtech tool, found significant improvements in writing proficiency among public-school students. Crucially, the study also showed a reduction in learning inequality, narrowing the gap between public and private school performance. This evidence confirms that Letrus not only raises literacy outcomes but also advances social equity.