Cover of Once a Mouse...

Once a Mouse...

by Marcia Brown

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Assigned across 1 curriculum list

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:Caldecott Medal

Once a Mouse... by Marcia Brown is assigned in US schools at grades k–3. It appears across 1 curriculum reference, sourced from state DOE pages and AP/IB/Common Core syllabi. Every citation below links to the primary source.

This page shows where Once a Mouse... 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 K–3
First published
1961
Genre
Juvenile Fiction
ISBN-13
9780684126623

New to these terms? Reading levels by grade · What is the Caldecott Medal?

More formats & details

Other formats on Amazon: Kindle · Audiobook

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Why widely assigned

This Juvenile Fiction title, typically at grades k–3. Written in the 1960s; cited across 1 curriculum framework.

Where this book is assigned

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Common questions

What grade level is Once a Mouse...?
Once a Mouse... is most commonly assigned in US schools in grades K–3. Specific grade placement varies by curriculum — AP Literature and IB English Literature typically use it in grades 11-12.
What curricula assign Once a Mouse...?
Once a Mouse... appears on reading lists for Caldecott Medal. Each assignment on this site links to its primary-source citation.
Is Once a Mouse... banned in schools?
Once a Mouse... 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.

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 K–3 — drawn from state ELA frameworks and AP/IB syllabi citing this book.
Curriculum alignment
Cited in 1 curriculum on this site (see “Where assigned” above for primary-source links).
State-level evidence
Not yet documented in a state-level framework on this site.
Removal / banning records
No tracked removal or challenge records in cited sources.
Seasonal / contextual tags
Tagged for: award-winner.

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