Management is proven
when it is recorded.
PRUF is the learning-management platform YEON built in-house. What a student did — and did not do — at every hour stays on record. So parents see the process, not just the results.
Being logged in is not
the same as studying.
A system that only tracks attendance cannot see the difference. What makes grades is not whether a student sat there, but what they did with the time. That is why we built our own platform instead of using off-the-shelf tools.
Record
What a student did — and did not do — at each hour stays on record.
Analyze
Where they stalled, which mistakes repeat, and where the plan slipped all become visible.
Adjust
What to change next week gets decided. This is where management begins.
The Daily Learning Record
Hour-by-hour records
The day is broken into hours, and what the student actually did in each one is written out in plain sentences. Hours with nothing in them stay on record too.
- Hourly activity summaries
- Online time separated from actual studying
- Submissions, grading, and questions in one place
Actual study time
Total hours, days logged in, session counts — and which screens the student spent time on. This is where studying and looking busy get told apart.
- Cumulative time over 7 and 30 days
- Sessions and days active
- Top activities by time spent
| Student | Total | Days | Top activities |
|---|---|---|---|
| Seoyeon K. | 16h 11m | 6 / 7 | Assignments 4h 55mReading 3h 56m |
| Minjae P. | 19h 4m | 7 / 7 | Assignments 4h 21mReview 3h 58m |
| Junho L. | 9h 56m | 5 / 7 | Assignments 4h 26mSAT 2h 16m |
| Jiwoo C. | 4h 28m | 7 / 7 | Essays 2h 10mChat 44m |
Hours planned, hours kept
Students submit their own study schedules, and PRUF overlays them with actual activity records. The stretches where the plan was not kept show up immediately.
- Per-student schedule submission and review
- Planned versus actual follow-through
- Daily and weekly views
Analysis that goes a level deeper
A score compresses 40 questions into a single number. PRUF looks at what is left underneath — which questions the student stalled on, how often they left the test screen, and where the written work went wrong.
A test environment identical to the real one
The digital SAT’s screen layout, question navigator, and Desmos calculator are reproduced exactly. On test day, no screen should be one the student is seeing for the first time.
- Same screens and controls as the real exam
- Built-in Desmos graphing calculator
- Module 2 difficulty adapts to Module 1 results
- Scored the same way as the real test
Per-question grading and work review
Students upload their handwritten work as-is; AI grades it first, then the instructor reviews and adjusts. What stays on record is not just the answer, but the exact step where the work went wrong.
- AI first pass, instructor review and correction
- Handwritten work kept on record
- Per-question teacher feedback
- Missed questions collected in one view
The sign was flipped while finding the vertex of the quadratic. The student knows the formula — this is a recurring slip at the application step.
Time spent per question
A correct answer that took more than twice as long as everyone else’s means the concept has not settled yet. It never shows on the answer sheet — but it will show on the next test.
- Per-question time heatmap
- Compared against the peer median
- Time overlaid with right and wrong answers
- Pinpoints the units for the next study plan
The answer was right, but it took 3m 18s. When the same question type repeats like this, that is a signal the concept needs review.
Focus during the test
From the moment the test opens until submission, PRUF records whether the student’s screen stayed on the test. Time away, the number of exits, even copy-and-paste attempts are kept.
- Time on the test screen versus away
- When they left, and on which question
- Copy, paste, and right-click logging
- Automatic flags when thresholds are crossed
These records are not there to surveil students. Knowing where focus broke lets us design that stretch differently for the next test — and when grades wobble, the cause can be confirmed in records instead of guesses.
Every assignment planned, none missed
Whenever school posts an assignment or a test date, it gets recorded right then. From that moment on, PRUF reminds as deadlines approach, assigns the supporting material, and collects anything that slipped.
School deadlines and supporting material
Each new school date is logged by subject as it comes up. Students and parents see what is left on a single screen.
- Assignments, quizzes, and test dates logged as they appear
- Overdue items collected and shown separately
- Attachments and score records per item
- Supporting material assigned against the calendar
Slipping subjects get caught first
Subjects that drop below 80 or trend downward collect automatically, and practice can be assigned to them on the spot. Eight weeks of daily status sit in a single row, so whether things are improving shows at a glance.
- Assignment completion and grade trends
- Daily status record (alert · watch · good)
- Below-threshold subjects collected automatically
- Practice assigned to the subject in one step
And More
Plan submission checks
See per class who has submitted today’s plan, and send a request on the spot to anyone who hasn’t. A student who put it off surfaces within the day.
Subject-level management
Every school course a student is taking is registered and managed — including courses without a YEON class, like US History, Adv Chemistry, or AP Pre-Calculus.
1:1 messaging
Students talk directly with the person in charge. Questions get asked the moment they come up, and every conversation stays part of the record.
Screens shown are recreations of the actual UI; all student information displayed is fictional.
- Guidance on what management your student needs, based on where they are now
- A walkthrough of what gets recorded in PRUF and what you will see
- A per-student solution plan delivered after the consultation