What reading level is Jekyll and Heidi?

Jekyll and Heidi by Robert Lawrence Stine is at a Level 3-4 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is Jekyll and Heidi appropriate for?

Jekyll and Heidi is recommended for Ages 9-12. HootRating: 8LE (Light — Emotional). Content flags: Mild Peril, Fantasy Violence, Fear & Anxiety.

What genre is Jekyll and Heidi?

Jekyll and Heidi is fiction — Juvenile Fiction. Part of the Goosebumps Series 2000 series.

Does Jekyll and Heidi have any content warnings?

Jekyll and Heidi has a HootRating of 8LE (Light — Emotional). Content flags include: Mild Peril, Fantasy Violence, Fear & Anxiety. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is Jekyll and Heidi?

Jekyll and Heidi by Robert Lawrence Stine is 117 pages (approximately 20,077 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Jekyll and Heidi

Robert Lawrence Stine

Jekyll and Heidi

Age Rating, Reading Level & Content Guide

Goosebumps Series 2000 #14

by Robert Lawrence Stine

Goosebumps Series 2000

Reading Level 3-4 8LE Ages 9-12 Matched

The text is written at a 3rd grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.

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About This Book

Heidi always thought the townspeople were silly to call her uncle Dr. Jekyll a mad scientist—until she discovers him sipping a mysterious potion and hears frightening animal noises at night. What secrets is her uncle hiding, and will Heidi uncover the truth behind the spooky sounds? Get ready for a thrilling adventure filled with mystery and monsters.

Themes

MonstersHorror talesMystery Family

Quick Assessment

This is a Level 3-4 book with mild content intensity. Content themes include mild peril, fantasy violence, fear & anxiety. Written for readers ages 9-12.

Why we rated Jekyll and Heidi 8LE

Jekyll and Heidi is written at a Level 3-4 reading level across 117 pages (approximately 20,077 words). Strong independent readers around grade 4.4 can typically handle this book on their own; with parent or teacher support, Jekyll and Heidi works for readers up to grade 5.4.

Read aloud, Jekyll and Heidi runs about 2.2 hours — long enough to span several bedtime sessions.

We rate Jekyll and Heidi as 8LE ("Light — Emotional") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.

Specific content flags noted by reviewers: Mild Peril, Fantasy Violence, Fear & Anxiety.

Thematically, Jekyll and Heidi explores monsters, horror tales, mystery, and family — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
✓ Readers who like a steady plot with enough momentum to keep pages turning.
✓ Kids drawn to stories about monsters, horror tales, mystery.
✓ Readers who fall hard for one book and want a long series to live in — there are 21 more books in the Goosebumps Series 2000 series.