Worst-rated (1M+ ratings)

Book	Author	Year	Avg_Rating	Ratings
Harry Potter and the Cursed Child: Parts One and Two (Harry Potter, #8)	J.K. Rowling	2016	3.48	1,053,768
New Moon (The Twilight Saga, #2)	Stephenie Meyer	2006	3.60	1,980,228
Allegiant (Divergent, #3)	Veronica Roth	2013	3.60	1,079,850
Twilight (The Twilight Saga, #1)	Stephenie Meyer	2005	3.66	6,768,733
Fifty Shades of Grey (Fifty Shades, #1)	E.L. James	2011	3.66	2,686,578
We Were Liars	E. Lockhart	2014	3.66	1,196,627
Lord of the Flies	William Golding	1954	3.70	2,978,458
Paper Towns	John Green	2008	3.71	1,401,533
Eclipse (The Twilight Saga, #3)	Stephenie Meyer	2007	3.73	1,860,870
Romeo and Juliet	William Shakespeare	1597	3.74	2,659,447
Breaking Dawn (The Twilight Saga, #4)	Stephenie Meyer	2008	3.74	1,753,619

Best-rated (1M+ ratings)

Book	Author	Year	Avg_Rating	Ratings
A Court of Mist and Fury (A Court of Thorns and Roses, #2)	Sarah J. Maas	2016	4.65	2,316,165
The Nightingale	Kristin Hannah	2015	4.63	1,522,463
Harry Potter and the Deathly Hallows (Harry Potter, #7)	J.K. Rowling	2007	4.62	3,816,569
Harry Potter and the Prisoner of Azkaban (Harry Potter, #3)	J.K. Rowling	1999	4.58	4,355,072
Harry Potter and the Half-Blood Prince (Harry Potter, #6)	J.K. Rowling	2005	4.58	3,376,481
Harry Potter and the Goblet of Fire (Harry Potter, #4)	J.K. Rowling	2000	4.57	3,826,394
Fourth Wing (The Empyrean, #1)	Rebecca Yarros	2023	4.57	2,029,141
The Last Olympian (Percy Jackson and the Olympians #5)	Rick Riordan	2009	4.55	1,048,484
Harry Potter and the Order of the Phoenix (Harry Potter, #5)	J.K. Rowling	2003	4.50	3,488,928
The Two Towers (Middle Earth, #2)	J.R.R. Tolkien	1954	4.49	1,008,364
A Court of Wings and Ruin (A Court of Thorns and Roses, #3)	Sarah J. Maas	2017	4.48	1,927,964

by arashtp