Perhaps the D grades were in 9th grade, and in courses not needed to complete the a-g subject requirements, or which can be validated by higher level courses (e.g. a C or higher in Foreign Language 3 validates Foreign Language 1 and 2).
Perhaps the D grades were in 9th grade, and in courses not needed to complete the a-g subject requirements, or which can be validated by higher level courses (e.g. a C or higher in Foreign Language 3 validates Foreign Language 1 and 2).