Practice prompts like a skill.Graded drills that stick.
Write a prompt for a real task, score it against the six-criterion RCTFCV rubric, and let spaced repetition schedule the next review as you improve. It grades the craft — the structure of what you wrote — not the model's luck.
Judging a prompt by whether the output looked good trains luck, not skill.
A good output can come from a sloppy prompt and a lucky model. Grade the prompt's structure and you improve what you control.
Read a prompting guide once and it's gone in a week. Skill needs spaced reps with feedback — the conditions practice grows under.
Most prompts never ask the model to check its own work. That's the single habit that separates reliable from lucky.
Edit the ratings — a high total still can't be STRONG without the Verification-ask.
A drill is held off STRONG — its Verification-ask is below the floor (needs 4+). A strong total never rescues a missing ask-the-model-to-check-itself.
Grades prompt craft against the RCTFCV rubric — the structure of what you wrote, not the model's output. STRONG requires Verification-ask of 4 or more. No tool makes you an expert in N days.
The same scoring runs as a Python engine and a workbook that reproduces it exactly.
Verbatim output from the included sample deck. The competitor-teardown drill scores 85 — but it caps at WORKABLE because its Verification-ask is below the floor. STRONG drills promote their Leitner box; the WEAK one resets to box 1.
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PROMPT PRACTICE LAB - graded drills with spaced repetition
Practice session as of 2026-06-23
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SESSION: DRILLING
Drills: 4 STRONG 2 WORKABLE 1 WEAK 1 Mean score: 74 (context only)
! GATE: a drill is held off STRONG because its Verification-ask is below floor.
PER DRILL
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Cold outreach email to a CFO 100 STRONG box 2->3 (review in 4 sess)
Summarize a support thread 75 STRONG box 1->2 (review in 2 sess)
Competitor teardown (high total no V-ask) 85 WORKABLE box 3->3 (review in 4 sess) <-- V-ASK GATE
Blog outline from a transcript 34 WEAK box 1->1 (review in 1 sess) <-- V-ASK GATE
Grades prompt craft against the RCTFCV rubric - not the model's
output. STRONG needs Verification-ask >= 4: ask the model to
check itself, or you cannot be a strong prompter.
==================================================================Three principles keep the practice honest.
The rubric scores the structure of what you wrote — role, context, task, format, constraints, verification-ask — not whether the model happened to nail it.
A drill caps at WORKABLE if Verification-ask is below 4, however high the total. The cap only lowers a would-be STRONG; it never lifts a WEAK.
STRONG promotes a card to a longer interval; WEAK resets it to frequent review. Intervals are counted in sessions, so the schedule never drifts.
A skill-builder for the person writing the prompt. Not a CI tool, not a model grader.
- A rubric-graded practice loop for your own prompt-writing skill.
- A spaced-repetition schedule that fades the scaffolding as you improve.
- A runnable engine + a workbook that reproduces it, run on your own drills.
- A CI prompt-diff tool (that's the Prompt Regression Lab) or an eval framework.
- A grader of the model's output or of your subject knowledge.
- A promise to make you an expert in N days — skill takes real reps.
The Lab grades prompt craft against a rubric — the structure of what you wrote — not the quality of the model's output and not your knowledge of any subject. No tool makes you an expert in a fixed number of days. Not legal, medical, or professional advice.
Anyone who wants prompting to be a reliable skill, not a lucky streak.
- You use AI daily and want your prompts to get reliably better.
- You're training a team and want a shared rubric and a practice cadence.
- You learn by doing — real drills with immediate, structured feedback.
- You need CI prompt-regression testing — use the Prompt Regression Lab.
- You want done-for-you prompts to paste — grab the free Operator Prompt Vault.
- You want a tool that grades the model's answers for you.
Build the skill here, then put it to work.
Once your prompts are STRONG, keep the output from sounding like everyone else's AI.
Apply the verification-ask habit to prompts that run code on your own uploads.
Drop your best drills into a reusable Claude Project for each business function.
Straight answers on what it grades, the gate, and how the spacing works.
Stop guessing at prompts.
Practice them like a skill.
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