The recommended ages are listed below:
Pre-reader: 4-5 years old
Early reader: 6-8 years old
Early Elementary: 8-10 years old
Upper Elementary: 10-12 years old
Middle School: 12-15 years old
High School: 15-18 years old
More info on each level at a glance:
Pre Reader: This is a preschool/early kindergarten program. It focuses less on content of subjects and more on the foundational basics. It will cover everything for math, phonics, letter identification, early reading, sight reading, the whole thing. Everything you need in one packet.
Early Reader: This is designed with very little writing other than light copywork (in a traceable format so as not to be too daunting and give extra practise for letter formation) and a writing project that students will be working on through the month.
Early Elementary: Also designed with as little writing as possible, the copywork is more advanced and no longer traceable. It is designed to go deeper into subjects and help kids think about things, do more mapwork, etc. but still not too heavy on the writing side.
Upper Elementary: Designed to be more advanced, more writing in the answer instead of circling the answer. Targeted questions that aren’t too broad that leave kids hanging. More in-depth writing projects/expectations (ie. a report instead of a paragraph), etc.
Middle School/High School: These two levels go into more depth for writing. In middle students begin to write their answers in paragraph form, they are prompted to do some research on their own. High School has very few answers in the answer key and leaves much more open ended, “What do you think,” type questions. It requires more research and is designed to spark curiosity and inspire the students to take ownership of their own learning. These levels are more time consuming.