Below is a booklist of middle grade fiction (Grades 3-6) with homeschooled characters:

Prairie Evers by Ellen Airgood (J AIR)

Skellig by David Almond (J822 ALM)

This Journal Belongs to Ratchet by Nancy Cavanaugh (J CAV)

Ida B...and Her Plans to Maximize Fun, Avoid Disaster, and (Possibly) Save the World by Katherine Hannigan (TEEN F HAN)

Schooled by Gordon Korman (J KOR)

Savvy by Ingrid Law (J LAW)

Nim's Island by Wendy Orr (J ORR)

Wonder by R.J. Palacio (J PAL)

Liar and Spy by Rebecca Stead (J STE)

Ballet Shoes by Noel Streatfeild (J STR)

Surviving the Applewhites by Stephanie S. Tolan (J TOL)

The Incorrigible Children of Ashton Place, Book 1: The Mysterious Howling byMaryrose Wood (J AUDIOBOOK WOO)