Cover of The Lost Hero

The Lost Hero

by Rick Riordan

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Assigned across 2 curriculum lists · 6 states

#74 most-assigned book in America — on school reading lists in 6 states (2026-07-13 study of 13,258 assignments).

Grade placement varies by school — the median assigned book spans 4 grade levels (83% span three or more, across 13,258 source-cited assignments).

On reading-award lists:Pacific Northwest Young Reader's Choice AwardVolunteer State Book Award

The Lost Hero by Rick Riordan is assigned in US schools at grades 5–9. It appears across 2 curriculum references and 6 states, sourced from state DOE pages and AP/IB/Common Core syllabi. Every citation below links to the primary source.

This page shows where The Lost Hero is assigned in US schools — curricula, states, grades, and the primary-source citations behind each placement. Not a summary or study guide.

Grade range
Grades 5–9
Age range
Ages 10–14
First published
2019
Genre
Fantasy
ISBN-13
9781368051439

New to these terms? Reading levels by grade

More formats & details

Other formats on Amazon: Kindle · Audiobook

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Part of a series — read in order

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See all books like The Lost Hero→ — matched on theme + reading level.

Why widely assigned

This Fantasy title, typically at grades 5–9. Written in the 2010s; pairs with curriculum units on mythology and heroism; cited across 2 curriculum frameworks.

Themes

mythology · heroism · memory

Where this book is assigned

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Common questions

What grade level is The Lost Hero?
The Lost Hero is most commonly assigned in US schools in grades 5–9. It appears on 2 school reading lists across 6 states. Exact placement varies by school and district.
What curricula assign The Lost Hero?
The Lost Hero appears on reading lists for Pacific Northwest Young Reader's Choice Award, Volunteer State Book Award. Each assignment on this site links to its primary-source citation.
Is The Lost Hero banned in schools?
The Lost Hero has documented removals from at least one public-school district in 1 state (IA) per PEN America's Index of School Book Bans 2022-2024. Policies vary by district.
What themes does The Lost Hero explore?
Central themes in The Lost Hero include mythology, heroism, memory.

Why this book is on this list

How we classify

Each dimension below is sourced from a public reference. The full framework is documented on the classification standard page.

Lexile measure
Not classified — this book has no published Lexile measure.
Grade band
Grades 5–9 — drawn from state ELA frameworks and AP/IB syllabi citing this book.
Curriculum alignment
Cited in 2 curricula on this site (see “Where assigned” above for primary-source links).
State-level evidence
Cited in 6 states ELA frameworks or DOE list (see citations above).
Removal / banning records
Documented as challenged or removed in 1 state per PEN America’s Index of School Book Bans — see the full banned & challenged books list.
Seasonal / contextual tags
Tagged for: book-club, read-aloud.

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