The modules inside provide teachers with essential and practical implementation of HOTS-based language learn-ing in a formal education setting. Teachers can also find illustrations of the models (in various language classrooms in Indonesian contexts) through 20 learning videos. As this toolkit provides step-by-step guidance, SEAQIL expects that teachers can tailor their own HOTS-based language learning according to the needs of their unique classes. Ultimately, students, who are the main body of education, will receive the utmost impact of this toolkit.