Revenge of the invisible boy

Revenge of the invisible boy is written at a Level 3-4 reading level (approximately 22,942 words). Strong independent readers around grade 4.5 can typically handle this book on their own; with parent or teacher support, Revenge of the invisible boy works for readers up to grade 5.5.

Read aloud, Revenge of the invisible boy runs about 2.6 hours — long enough to span several bedtime sessions.

We rate Revenge of the invisible boy as 8LP ("Light — Physical") 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.

Thematically, Revenge of the invisible boy explores adventure, mystery, and friendship — these threads give the book room to mean different things to different readers.