Chapter Book · Ages 7–9 · 1988
A second-grader navigates the challenges of elementary school with the help of his best friend, a mischievous classmate named Harry.
Chapter Book · Ages 7–9 · 1989
A group of students in Room 2B participate in various activities and projects, including a secret pal exchange and an anti-smoking campaign, under the guidance of their teacher Miss Mackle.
Chapter Book · Ages 7–9 · 1989
A second-grade class navigates various adventures and misadventures throughout the school year.
Chapter Book · Ages 7–9 · 1990
A boy struggles to cope with the loss of his front teeth and the changes it brings to his life and relationships
Chapter Book · Ages 7–9 · 1991
A class of students must come to terms with their teacher's sudden absence due to an injury and find a way to celebrate Christmas without her
Chapter Book · Ages 7–9 · 1992
A second-grade boy plans a wedding with his classmate on Valentine's Day, but things don't go as planned
Chapter Book · Ages 7–9 · 1996
A student is wrongly accused of touching a butterfly's wing and is sent to the Suspension Room, where he discovers that the teacher in charge is not as scary as he thought.
Chapter Book · Ages 7–9 · 1997
Harry claims purple people invaded. Can he prove it?
Chapter Book · Ages 7–9 · 1998
Will Harry conquer his fear of the Drop of Doom or endure endless teasing?
Chapter Book · Ages 7–9 · 1998
A class trip turns into a revenge plot between sworn enemies.
Chapter Book · Ages 7–9 · 2000
A class buys a telescope, but Harry dreams of reaching the moon. Can he make it happen?
Chapter Book · Ages 7–9 · 2000
A third-grade class celebrates Halloween with costumes and a mystery to be solved
Chapter Book · Ages 7–9 · 2001
A class field trip on a riverboat sparks excitement and imagination.
Chapter Book · Ages 7–9 · 2002
Best friends clash over a dragon project, causing chaos in Room 3B.
Picture Book · Ages 7–9 · 2003
A necklace, a secret, and a rule-breaking adventure await. Will they dare?
Chapter Book · Ages 7–9 · 2003
A boy navigates the challenges of the holiday season with the help of his classmates and teacher.
Chapter Book · Ages 7–9 · 2004
A locked closet hides secrets that Harry and his classmates must uncover.
Chapter Book · Ages 7–9 · 2005
A cat's mischief leads two boys on a wild school chase. Can they avoid trouble?
Chapter Book · Ages 7–9 · 2006
A ruined origami sparks a mysterious revenge plot at school.
Chapter Book · Ages 7–9 · 2006
A third-grade student tries to uncover the identity of his teacher's fiancé by investigating clues in the school library
Chapter Book · Ages 7–9 · 2007
Can Harry crack the cafeteria code before his classmate ruins his detective dreams?
Chapter Book · Ages 7–9 · 2008
A mailbox mystery unfolds as Harry uncovers a thief's secret. Can he solve it before jumping to wrong conclusions?
Chapter Book · Ages 7–9 · 2008
Harry's bug obsession leads to a classroom play. Will it be a hit or a disaster?
Chapter Book · Ages 7–9 · 2009
A missing valentine forces Harry to face his fear of heights. Can he conquer it in time?
Chapter Book · Ages 7–9 · 2010
Indoor recess chaos leads to unexpected trouble and a surprise visitor.
Chapter Book · Ages 7–9 · 2011
Kids unravel clues to uncover a suitcase's secret. Will they succeed or stumble?
Chapter Book · Ages 7–9 · 2011
A classroom heist to rescue a precious origami pig leads to unexpected chaos.
Chapter Book · Ages 7–9 · 2012
A school art contest sparks rivalry and potential chaos in Room 3B.
Chapter Book · Ages 7–9 · 2013
A missing diamond and a talent show test Harry's detective skills.
Chapter Book · Ages 7–9 · 2014
Can Harry stop a bully misusing Safety Patrol power and earn his star badge?
Chapter Book · Ages 7–10 · 2015
Uninvited kids crash their teacher's wedding, risking chaos to save the day.
Chapter Book · Ages 6–8 · 2015
Can Harry save his secret hideout from becoming an apartment building?
Chapter Book · Ages 7–10 · 2016
Mary's birthday plans derail. Can her friends turn disaster into fun?
Chapter Book · Ages 7–10 · 2018
Can Harry and Song Lee save Doug from the dreaded lice outbreak?
Chapter Book · Ages 7–10 · 2018
Field Day turns chaotic as accusations of cheating threaten friendships.
Chapter Book · Ages 7–9 · 2019
Doug faces losing his best friend and a mysterious new neighbor.
