Cover of The Mystery of the Monarchs

The Mystery of the Monarchs

by Barb Rosenstock · Grades 4–8 · Nonfiction

The Mystery of the Monarchs by Barb Rosenstock is on US reading lists at grades 4–8. It appears on 1 list: the California Young Reader Medal, across 1 state. Every citation below links to the primary source.

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Before you buy: Ages 8–12 · Grades 4–8. The button opens the hardcover edition (ISBN 9781984829580). If the class uses a set edition or translation, match its ISBN first.

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Assigned across 1 curriculum list · 1 state

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:California Young Reader Medal

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

Reading level at a glance

Grade range
Grades 4–8
Age range
Ages 8–12
First published
2022
Genre
Nonfiction
ISBN-13
9781984829580

Sources: grade range from the cited lists below, last checked 2026-06-08; pages and year from our catalog record (sources); reading time is an estimate at 250 words a minute.

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Similar grade-level books

See all books like The Mystery of the Monarchs→ — matched on theme + reading level.

Why it is assigned

This nonfiction title is typically read at grades 4–8. Written in the 2020s; pairs with curriculum units on science and nature; cited on the California Young Reader Medal.

Themes

science · nature · community

Where this book is recommended

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Common questions

What grade level is The Mystery of the Monarchs?
The Mystery of the Monarchs is listed for grades 4–8. It appears on 1 state book-award list across 1 state. Exact placement varies by school and district.
What curricula assign The Mystery of the Monarchs?
The Mystery of the Monarchs appears on reading lists for California Young Reader Medal. Each assignment on this site links to its primary-source citation.
Is The Mystery of the Monarchs banned in schools?
The Mystery of the Monarchs does not appear in PEN America's Index of School Book Bans 2022-2024. No documented multi-district removals on record, but individual districts may challenge titles locally.
What themes does The Mystery of the Monarchs explore?
Central themes in The Mystery of the Monarchs include science, nature, community.

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 4–8 — drawn from the state book-award lists citing this book.
Curriculum alignment
Cited in 1 curriculum on this site (see “Where recommended” above for primary-source links).
State-level evidence
On state book-award lists in 1 state (see citations above).
Removal / banning records
No tracked removal or challenge records in cited sources.
Seasonal / contextual tags
Tagged for: book-club.

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