Checkmark Plagiarism is a forensic plagiarism detection platform built for K-12 educators. Rather than scanning a finished document and returning a similarity score, Checkmark breaks down exactly how a piece of writing was produced, categorizes the types of plagiarism detected, and delivers a structured report that teachers can act on immediately.

The platform analyzes student writing at every stage of the process. Keystroke analysis tracks typing patterns, speed, and behavioral signals to verify authentic writing. Copy-paste detection identifies content pulled from external sources. Transcription detection flags text that was dictated or transcribed rather than typed, a method most detection tools miss entirely. AI detection identifies machine-generated writing. And Essay Playback lets teachers review the full writing session, seeing every pause, deletion, and edit in sequence. Each of these signals feeds into a single plagiarism report organized by type, so teachers are not left interpreting a vague percentage. They see what happened, when it happened, and what category it falls into.

Checkmark also references past submissions to surface patterns across a student's work over time, automatically flagging inconsistencies that would otherwise go unnoticed. The result is a system where teachers have the full body of evidence in front of them and can make informed decisions quickly and privately, without public confrontation or guesswork. With a 96% accuracy rate, above industry benchmarks set by tools like Turnitin (91%) and GPTZero (89%), Checkmark significantly reduces false accusations.