What reading level is NASA mathematician Katherine Johnson?

NASA mathematician Katherine Johnson by Heather E. Schwartz is at a Level 5-6 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is NASA mathematician Katherine Johnson appropriate for?

NASA mathematician Katherine Johnson is recommended for Ages 9-12. HootRating: 10C (Clear).

What genre is NASA mathematician Katherine Johnson?

NASA mathematician Katherine Johnson is nonfiction — Juvenile Nonfiction. Part of the STEM Trailblazer Bios series.

Does NASA mathematician Katherine Johnson have any content warnings?

NASA mathematician Katherine Johnson 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 NASA mathematician Katherine Johnson?

NASA mathematician Katherine Johnson by Heather E. Schwartz is 32 pages (approximately 2,317 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

NASA mathematician Katherine Johnson

Heather E. Schwartz

NASA mathematician Katherine Johnson

Age Rating, Reading Level & Content Guide

by Heather E. Schwartz

STEM Trailblazer Bios

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

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

Katherine Johnson dreamed big in a time when girls rarely pursued math and science. With a sharp mind and determination, she became a key figure in space exploration, helping astronauts reach the moon through her incredible calculations. Her story celebrates breaking barriers and following your passion against all odds.

Themes

African American women mathematiciansBiographyMathematiciansComing of Age Family

Quick Assessment

This is a Level 5-6 book with gentle content intensity. No notable content concerns flagged. Written for readers ages 9-12.

Why we rated NASA mathematician Katherine Johnson 10C

NASA mathematician Katherine Johnson is written at a Level 5-6 reading level across 32 pages (approximately 2,317 words). Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, NASA mathematician Katherine Johnson works for readers up to grade 7.5.

Read aloud, NASA mathematician Katherine Johnson takes about 15 minutes, which fits within a single read-aloud session.

We rate NASA mathematician Katherine Johnson 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, NASA mathematician Katherine Johnson explores african american women mathematicians, biography, mathematicians, coming of age, 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.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about african american women mathematicians, biography, mathematicians.
✓ Readers who fall hard for one book and want a long series to live in — there are 4 more books in the STEM Trailblazer Bios series.
✓ Curious kids who prefer real-world topics over made-up stories.

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.