What reading level is The Fran with Four Brains (Franny K. Stein, Mad Scientist #6)?

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) by Jim Benton is at a Level 5-6 reading level (Lexile 830L). Recommended for Middle Grades readers (Ages 9-12).

What genre is The Fran with Four Brains (Franny K. Stein, Mad Scientist #6)?

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) is fiction — Juvenile Fiction.

Does The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) have any content warnings?

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) has a HootRating of 10C (Clear). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is The Fran with Four Brains (Franny K. Stein, Mad Scientist #6)?

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) by Jim Benton is 104 pages.

Reviewed by HootRated editorial · Last updated May 18, 2026

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6)

Jim Benton

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6)

Age Rating, Reading Level & Content Guide

by Jim Benton

Reading Level 5-6 10C Ages 9-12 Balanced Read

The text is written at a 5th 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

Franny K. Stein isn't your average kid—she's got four brains, and that means quadruple the smarts and quadruple the trouble! When her to-do list explodes, her mad scientist mind races to invent the ultimate solution. But what happens when her creations start to take over?

Themes

School storiesHumorous storiesScienceJuvenile fictionRobots

Quick Assessment

This humorous middle-grade book follows Franny K. Stein, a brilliant young scientist who struggles with managing her overwhelming tasks. It combines science, school life, and quirky inventions in a fun and engaging way, suitable for children ages 9-12. Parents should know it contains light science-based humor and imaginative scenarios without intense content.

Why we rated The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) 10C

The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) is written at a Level 5-6 reading level with a Lexile measure of 830L across 104 pages. Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) works for readers up to grade 7.5.

We rate The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) as 10C ("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.

No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.

Thematically, The Fran with Four Brains (Franny K. Stein, Mad Scientist #6) explores school stories, humorous stories, science, juvenile fiction, and robots — 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.
✓ Patient readers who enjoy slower, character-driven stories.
✓ Kids drawn to stories about school stories, humorous stories, science.

Maybe not for

! Readers whose emotional readiness lags behind their decoding skills — this book's intensity outruns its reading level, a classic "gifted kid" mismatch.
! Reluctant readers who need a fast hook — the pacing here rewards patience.