The Diary of a Young Girl (Anne Frank, 1946)
The Twenty-One Balloons (William Pene du Bois, 1947)
Rifles for Watie (Harold Keith, 1957)
To Kill a Mockingbird (Harper Lee, 1960)
A Wrinkle in Time (Madeleine L'Engle, 1962)
The Cay (Theodore Taylor, 1969)
A Wind in the Door (Madeleine L'Engle, 1973)
The Westing Game (Ellen Raskin, 1978)
Skinnybones (Barbara Park, 1982)
There's a Boy in the Girls' Bathroom (Louis Sachar, 1987)
Maniac Magee (Jerry Spinelli, 1990)
Ghosthunters & The Incredibly Revolting Ghost (Cornelia Funke, 1993) (maybe a sequel or two)
(i somehow still have the copy of this i read in first or third grade)
Walk Two Moons (Sharon Creech, 1994)
A Child Called "It" (Dave Pelzer, 1995)
Many Goosebumps books (R.L. Stine, 1992-1997)
Crash (Jerry Spinelli, 1996)
Frindle (Andrew Clements, 1996)
Wringer (Jerry Spinelli, 1997)
Holes (Louis Sachar, 1998)
Sasquatch (Roland Smith, 1998)
Bone comic series (Jeff Smith, 1995-2004)
Because of Winn-Dixie (Kate DiCamillo, 2000)
Most of the Captain Underpants series (Dav Pilkey, 1997-2003)
A decent portion of House Of Leaves (Mark Danielewski, 2000) (Most recent (9th grade, ~6 yrs ago))
Remnants 1: The Mayflower Project (K.A. Applegate, 2001) (Early childhood)
Remnants 2: Destination Unknown (K.A. Applegate, 2001) (Middle school)
Rest of the Remnants series (K.A. Applegate, 2001-2003)
A Series of Unfortunate Events series (except The Miserable Mill, which i skipped for some reason) (Lemony Snicket, 1999-2006)
Loser (Jerry Spinelli, 2003)
Milkweed (Jerry Spinelli, 2003)
Who Let the Ghosts Out? (R.L. Stine, 2004) (two or three sequels too, i think
Cryptid Hunters (Roland Smith, 2005)
Lunch Money (Andrew Clements, 2005)
Chasing Vermeer / The Wright 3 / The Calder Game (Blue Balliett, 2004-2008)
The Boy in the Striped Pajamas (John Boyne, 2006)
Percy Jackson series (Rick Riordan, 2005-2009)
Unwind (Neal Shusterman, 2007)
Whistles: The Starlight Calliope (Andrew Hussie, 2007)
(my physical copy of this is one of my most cherished belongings)
Much of the Diary of a Wimpy Kid series (Jeff Kinney, 2007-2009)
Hell House, & Other True Hauntings From Around the World (Alison Rattle & Allison Vale, 2008)
Smiles To Go (Jerry Spinelli, 2008)
The Missing 1: Found (Margaret Haddix, 2008)
The 39 Clues series (Different author for each of the ten books, 2008-2010)
The Last Thing I Remember (Andrew Klavan, 2009) (this one was kind of dumb)
The Danger Box (Blue Balliett, 2010)