Elementary Curriculum Schedule
Here you can find a proposed schedule from the Ministry of Education in implementing the new textbooks at your school.
Textbook codes – HF1/2 Hi Friends 1/2. 新X new textbook for X grade
H30 = 2018 (30th year of the Heisei Emperor)
H31 = 2019 (31st year of the Heisei Empoeror… also the last)