Automated grammar and lexical correcting software is a reality. Teachers need to have a reasoned approach to the use of such material, on home-work, during class, and on tests.
It is important to be aware of the limitations of said software. Around Christmas time, I often read or assign as a story to read O. Henry's classic tear-jerker, "The Gift of the Magi." For kicks, I entered it into Grammarly's black-box. Here's the (free) report I got from
https://www.grammarly.com:
We’ve found 101 writing issues in your text and have also detected significant plagiarism.
Grammar 12
Spelling 9
Punctuation 32
Conciseness 12
Readability [Check mark]
Correct word choice 12
Additional writing issues 24
Significant plagiarism found !
[But no comment on how the money doesn't add up unless Della had an old two-cent or three-cent coin.]
Grammarly
Moderator: Joe