Are classes that are specified as 'extracurricular class' still considered towards the count of 4-6 classes per year? And does that mean that technically a student could choose to arrange their classes so they only do "fun" things alongside the required Gifts class. Such as picking Gifts, Art, Music, Theater. Or Gifts, Swimming, Pet Bonding, and a Club. Do clubs count towards the class total?

And are classes (other than Gifts) strictly one-year-only? For example, could a student choose to participate in Pet Bonding two years in a row, or in Portal Exploration all their school years if it interests them that much? And does being on the student council count towards the class total because it is listed under 'classes' if I am not mistaken?

I am asking because I want to determine what classes my character has taken in previous years (just as info for myself) cause it will shape the character better in my mind.