What reading level is Karen's Big Lie (Baby-Sitter's Little Sister #38)?

Karen's Big Lie (Baby-Sitter's Little Sister #38) by Ann M. Martin is at a Level 3-4 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is Karen's Big Lie (Baby-Sitter's Little Sister #38) appropriate for?

Karen's Big Lie (Baby-Sitter's Little Sister #38) is recommended for Ages 9-12. HootRating: 8C (Clear). Content flags: Fear & Anxiety.

What genre is Karen's Big Lie (Baby-Sitter's Little Sister #38)?

Karen's Big Lie (Baby-Sitter's Little Sister #38) is fiction — Juvenile Fiction. Part of the Baby-Sitters Little Sister series.

Does Karen's Big Lie (Baby-Sitter's Little Sister #38) have any content warnings?

Karen's Big Lie (Baby-Sitter's Little Sister #38) has a HootRating of 8C (Clear). Content flags include: 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 Karen's Big Lie (Baby-Sitter's Little Sister #38)?

Karen's Big Lie (Baby-Sitter's Little Sister #38) by Ann M. Martin is 78 pages (approximately 11,329 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Karen's Big Lie (Baby-Sitter's Little Sister #38)

Ann M. Martin

Karen's Big Lie (Baby-Sitter's Little Sister #38)

Age Rating, Reading Level & Content Guide

by Ann M. Martin

Baby-Sitters Little Sister

Reading Level 3-4 8C Ages 9-12 Balanced Read

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 gentle with no concerning themes.

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About This Book

Karen feels unprepared for a surprise math quiz and makes a choice that leads to a big fib. When questioned by her teacher and friend, she denies cheating, but keeping the secret becomes harder with every passing day. Can Karen find a way to make things right before her lie causes more trouble?

Themes

Friendship Family Coming of AgeHonesty

Quick Assessment

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

Why we rated Karen's Big Lie (Baby-Sitter's Little Sister #38) 8C

Karen's Big Lie (Baby-Sitter's Little Sister #38) is written at a Level 3-4 reading level across 78 pages (approximately 11,329 words). Strong independent readers around grade 4.1 can typically handle this book on their own; with parent or teacher support, Karen's Big Lie (Baby-Sitter's Little Sister #38) works for readers up to grade 5.1.

Read aloud, Karen's Big Lie (Baby-Sitter's Little Sister #38) runs about 1.3 hours — long enough to span several bedtime sessions.

We rate Karen's Big Lie (Baby-Sitter's Little Sister #38) as 8C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.

Specific content flags noted by reviewers: Fear & Anxiety.

Thematically, Karen's Big Lie (Baby-Sitter's Little Sister #38) explores friendship, family, coming of age, and honesty — 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 friendship, family, coming of age.
✓ Readers who fall hard for one book and want a long series to live in — there are 85 more books in the Baby-Sitters Little Sister series.