Educators should be aware that, with the exception of the Grade 9 science course, 2022 (SNC1W), the 2008 Science curriculum for Grade 10 and the 2008 Science curriculum for Grades 11–12 remain in effect. All secondary science courses for Grades 10–12 will continue to be based on those documents. All references to Grade 9 that appear in The Ontario Curriculum, Grades 9 and 10: Science, 2008 and The Ontario Curriculum, Grades 11 and 12: Science, 2008 have been superseded by The Ontario Curriculum, Grade 9: Science, 2022. As of September 2022, this course replaces Science, Grade 9, Academic (SNC1D) and Science, Grade 9, Applied (SNC1P). These courses expired at the end of the 2021-22 school year.