Cornerstone Academics
Editing Mastery — Interactive Proofreading Practice App (Grades 3–12)
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One purchase covers up to 5 students. To add more students, purchase an additional license.
One app, twelve levels. Editing Mastery gives your student a flawed sentence and one job: fix it. Capitals, end marks, commas, apostrophes, tricky homophones, run-ons, semicolons, who vs. whom — 48 skills climbing from beginning editing (about third grade) to advanced high-school usage.
A short placement test finds the right starting level in minutes. Every skill opens with its rule, plainly stated. The student types the correction directly into the sentence; a first miss earns a hint, and a second shows the corrected sentence with every change in bold — then the student retypes it, so the fix passes through their own fingers. Three clean fixes in a row masters a skill, and mastered skills keep returning for quick review so nothing fades.
Read-aloud is built in: every sentence can be read out loud in a natural voice — a quiet superpower for young editors, who often hear a mistake before they see it. Turn it on or off anytime in Settings.
Works on iPad and computer in any modern browser. No app store, no subscription — one purchase, and the app grows over time: new practice sentences are added at no extra charge.
Access: after checkout, log in on our site with the email you used to purchase and open your My Apps page — Editing Mastery will be waiting.
What parents and teachers say.
From the teachers, friends, and parents who know Serena's work from the inside.
Amazing! I love writing and want my children to also develope appreciation for it as well, this curriculum will help cultivate that.
It is perfect for the homeschool family who wants excellent writing style without the stress and pressure. The Teacher's guide walks you through each lesson so you can teach with confidence. Ten stars for Cornerstone Academics!
Sarah Samuel Mother of 3
We are so grateful for Serena! Her patience, kindness, and creative approach to teaching have made learning a wonderful experience for our family. She takes the time to understand how each child learns best and tailors every lesson to keep them engaged and excited. We have seen incredible growth not only in our child’s academic progress, but also in his confidence and love for learning. We could not ask for a better teacher!
Bethany Mitchell Mother
Serena is a wonderful teacher who treats every student with kindness, fairness, and respect. She encourages her students to challenge themselves and do their best, and she keeps parents well informed about their child’s progress. We truly appreciate her dedication and support.
PARENT OF A FORMER STUDENT
Read one story. Teach one week. Decide from experience.
Use it with your child. See samples of our stories, questions, and lesson pages.