Hiroshima University High School’s Super Science High School (SSH) projects have begun their fourth term of designation, in which the curriculum requires more from the English department than in the previous terms. The English department is involved in the development of SAGAs, a newly set of school subjects. In SAGAs, unlike during the previous terms, the English department is responsible for subjects including contents that are outside the scope of regular English classes as set by the national course of study. This poses new challenges for the English teachers who could not rely on their repertoire for teaching language skills. The only subject inherited from the previous program was AS Science Communication. The other subjects, i.e., General Science for first-year students and Critical Communication for second-year students, required totally new contents. In 2018, ready-made materials were adopted because of the impracticality of developing all the contents from scratch. However, our goal is to specially design original materials for the school’s SSH programs. This paper reports on how the English department developed the required contents for the SSH subjects.