What reading level is Iggy Loomis?

Iggy Loomis by Jennifer Allison is at a Level 4-5 reading level (Lexile 760L). Recommended for Middle Grades readers (Ages 9-12).

What age is Iggy Loomis appropriate for?

Iggy Loomis is recommended for Ages 9-12. HootRating: 9LE (Light — Emotional).

What genre is Iggy Loomis?

Iggy Loomis is fiction — Juvenile Fiction.

Does Iggy Loomis have any content warnings?

Iggy Loomis has a HootRating of 9LE (Light — Emotional). 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 Iggy Loomis?

Iggy Loomis by Jennifer Allison is 202 pages.

Reviewed by HootRated editorial · Last updated June 9, 2026

Iggy Loomis

Jennifer Allison

Iggy Loomis

Age Rating, Reading Level & Content Guide

Superboy in Training

by Jennifer Allison

Reading Level 4-5 9LE Ages 9-12 Balanced Read

The text is written at a 4th 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

The sharp buzz of wings fills the air as Daniel watches his little brother, Iggy, examine a strange bug with wide eyes. The scent of fresh earth and wildflowers drifts from the garden where a mysterious new neighbor has just arrived. Suddenly, Iggy's body begins to change in ways no one could have imagined, and everything about family and friendship feels different.

Themes

Science & Nature Family FriendshipScience fictionMutation (Biology)BrothersExtraterrestrial beings

Quick Assessment

This middle-grade science fiction story follows Daniel as he navigates sharing his space with his younger brother, Iggy, whose DNA begins to mutate after their new neighbor moves in. The book explores themes of family dynamics, mutation, and friendship in an accessible way for children ages 9 to 12. Parents should note the presence of some biological mutation concepts presented through a sci-fi lens.

Why we rated Iggy Loomis 9LE

Iggy Loomis is written at a Level 4-5 reading level with a Lexile measure of 760L across 202 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Iggy Loomis works for readers up to grade 6.5.

We rate Iggy Loomis as 9LE ("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.

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

Thematically, Iggy Loomis explores science & nature, family, friendship, science fiction, and mutation (biology) — 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 science & nature, family, friendship.