Things we know by heart

Jessi Kirby

Cover of Things we know by heart

Things we know by heart

Age Rating, Reading Level & Content Guide

by Jessi Kirby

Reading Level 5-6 Moderate (Lvl 3) Ages 9-12 Matched

The text is written at a 5th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.

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About This Book

Have you ever wondered if a part of someone you love could live on inside someone else? Quinn’s world changes forever when her boyfriend’s heart is donated to a stranger. What happens when she meets the person carrying that heart—and feelings she never expected?

Themes

GriefLoveHeart TransplantationComing of AgeFamily

Quick Assessment

This middle-grade novel explores themes of grief, love, and organ transplantation through the story of Quinn, who seeks connection and closure after her boyfriend's death by reaching out to his organ recipients. It thoughtfully addresses emotional loss and healing, making it suitable for readers aged 9-12. Parents should note the story involves complex feelings around death and identity but handles these topics with sensitivity.

For Parents

Content Intensity

Level 3 — Moderate
Gentle Mild Moderate Intense Very Intense

Real stakes and emotional weight. May include sustained danger, loss, or bullying.

Content Flags

Loss & Grief Fear & Anxiety Emotional
Data confidence: high

Was our "Moderate" content intensity rating accurate for this book?

Reading Insights

Hook Factor

1/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

5/10

Good conversation starter with themes worth exploring together.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
5
Emotional Weight
6
Theme Richness
8
World Scope
1
Data Confidence
7

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Details

Book Length

291 pages
ISBN
9780062299437
Pages
291
Publisher
HarperTeen
Published
2015
Type
Fiction
Lexile
840L

Genres

Subjects

GriefHeartTransplantationLoveLove StoriesGrief in AdolescenceTeenagers and DeathDeception