A 27 Composite is the rounded average of English, Math, and Reading—between a solid 25 and a 28 merit step. You get there by lifting any core section still in the low 20s and finishing every section. Science is optional and does not enter the Composite.
The Composite math
29 + 27 + 25 averages 27. 30 + 28 + 23 also averages 27. A 19 in any core section usually blocks a clean 27. Fix the floor first.
What to practice
Official timed sections, error log on repeating types, one full core each week. The general raise: how to raise your ACT score.
The bottom line
Treat 27 as a three-section average. Raise the weakest core, then decide whether the list actually needs a 28 or 30.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.