Independent PL-300 preparation
And the second attempt usually fails for the same reason as the first: you had no way of knowing you were not ready yet.
124 lessons · 600 audited questions · 6 datasets · all in English
I want to know if I am ready — €147Instant access · Unconditional 15-day guarantee
Not sure yet? Take the free diagnostic — 20 questions, 12 minutes, and a map of where you stand.
You watched the whole course. You took notes. You ran the free practice tests you found and scored 80, 85, 90 per cent. You booked the exam feeling reasonably calm — because the numbers said you were fine.
Then the screen said Fail.
And the worst part was not the money. It was the second right after, when you realised you had no idea where you went wrong — and that if you rebooked tomorrow you would do exactly the same studying, with exactly the same confidence, and get exactly the same surprise.
If you told someone you were sitting the exam, you had to explain. If you did not, you had to carry it alone.
You are not being dramatic. And it was not lack of effort.
The explanation nobody gave you
You did not fail because you did not study enough.
You failed because the instrument you used to measure whether you were ready was not measuring anything.
That practice test where you scored 85% was not telling you that you knew Power BI. It was telling you that you are good at taking tests — at spotting patterns, eliminating the odd option and picking the one that looks like the right answer.
On the PL-300, that skill is worth zero. And you only find out on the day.
How I found this out
I did not come from tech.
Until January 2023 I was an inspection coordinator at the city government of Araçariguama, in the interior of São Paulo. Regulatory processes, document review, compliance reports. I knew spreadsheets. DAX, not one line.
In February 2023 I joined EY as a Business Intelligence trainee. I spent the next two years building dashboards and KPIs in Power BI for financial-sector clients: querying and extracting in SQL, ETL in Power Query with M, data coming out of TOTVS Protheus, modelling, governance. I left as a BI Analyst.
So: I did not study Power BI to pass an exam. I did Power BI every day, for people paying a lot for the result.
Which is exactly why the PL-300 bothered me so much.
When I looked at the exam closely, two uncomfortable things became obvious.
First: doing the work is not the same as being able to prove you do it. I had two years of delivery for financial-sector clients and not one line on my profile that an automated CV filter would recognise. Anyone who had never seen me work had no way of knowing.
The second was worse. The exam tests things I almost never had to touch — because in consulting there is an infrastructure team for that. Gateway, workspace roles, dynamic RLS, sensitivity labels. That is the Manage and secure domain: worth up to 20% of the exam, and I, with two years of practice, was walking straight into the gap.
If that happens to someone who does Power BI daily, imagine someone who studied from videos.
And there is a third detail I have to tell you, because it changed the whole product: my English is intermediate. The exam is in English, and so is every screen you will be asked about. So Route 300 is written in English end to end — the lessons, the questions, the datasets and the interface strings. You drill the exam's own vocabulary while you learn the concept, instead of translating it back under time pressure on exam day.
That is when I stopped looking for the right course and started building the material I wished I had had.
I wrote 600 original questions. It took months. I followed a method, reviewed them one by one, and thought they were flawless.
Before publishing, I did something almost nobody does: instead of reviewing question by question, I measured the whole bank at once.
Which means: someone who had never opened Power BI in their life, always guessing A, would have scored 95% on my practice exam.
And here is the detail that changes everything — and the reason I am telling you this:
No question-by-question review would ever catch that defect. Looked at in isolation, each question is flawless. The bias only exists in the aggregate. It only shows up if you measure the whole batch. And nobody measures the batch.
That is when it clicked.
If I, writing with a method and reviewing line by line, unknowingly produced a bank you could ace without knowing anything — what about the free practice test you downloaded from some website?
The one where you scored 85%.
The one that told you it was safe to book the exam.
The villain of your failure was not you. It was the instrument.
I spent the following weeks fixing it. I rewrote 254 questions from scratch. I shuffled the answer key with a deterministic seed. I trimmed the justification tail that was inflating the correct options.
| Before | Today | |
|---|---|---|
| Answer key on option A | 95% | 24.3% |
| Items with a visibly longer option | 254 | 5 |
| Length ratio correct/distractors | 2.08× | 1.07× |
| "Pick the longest", counting characters | 80.6% | 26.0% |
That last number was the hard one, and I published it open while I had no fix. A script counting characters used to score nearly half the bank by always picking the longest option. Today it scores 26.0% — pure chance. The fix was not shortening the correct option, which would have degraded the answer: 145 distractors were rewritten, one at a time, until they were as complete as it is. 5 questions out of 600 still have an option that stands out (1 of them the correct one), and using the heuristic by reading scores 25.5% — guessing. You do not have to take my word for it: the script is published, run it yourself.
I am not showing you this to boast. I am showing you because it is the only proof that matters: I am the only person in this market who audited their own bank and published the defect they found.
I have not sat the PL-300 yet. I am preparing for it with this material — that is literally why it exists.
If what you want is someone selling you their own result, that is not me, and you should close this page now.
What I am offering is not my result. It is my instrument — and I audited that instrument in front of you, with numbers, including the defect I found in myself.
When I sit it, I will publish the result here. Pass or fail.
The new opportunity
If the problem is measurement, the answer is not to study more. It is to study with an instrument that does not lie — and to have a number you can trust.
That number exists. It is called the Readiness Score. It is not your average on practice exams. It combines five axes:
| Axis | Answers |
|---|---|
| Knowledge | Do you score across all four domains, or only the two you like? |
| Coverage | How much of the exam have you actually touched? |
| Retention | Do you still get right what you got right three weeks ago? |
| Pace | Are you moving, or have you been stalled for 12 days? |
| Consistency | Do you get it right every time, or did you get lucky once? |
While it sits below 80, the system tells you exactly which domain is holding you back — and does not let you book the exam thinking you are ready.
When it crosses 80, you get one message:
And this time you will know why.
I want my number — €147What Route 300 is
| Act | Name | Official domain | Weight |
|---|---|---|---|
| 0 | The Valley | Fundamentals and Excel | base |
| 1 | The Mine | Prepare the data | 25–30% |
| 2 | The Forge | Model the data | 25–30% |
| 3 | The Studio | Visualize and analyze | 25–30% |
| 4 | The Fortress | Manage and secure | 15–20% |
| + | The Aqueduct | SQL track | employability |
19 modules. 124 lessons. Each lesson runs 20 to 35 minutes and ends in an exercise.
At the end of every Act there is a domain boss — a 25 to 30 question exam with a 72% cut score. Fail it, you do not advance. That is not cruelty: it is what stops you reaching the final practice exam with a gap nobody flagged.
Three things that change the outcome
Microsoft publishes the weights: Prepare 25-30%, Model 25-30%, Visualize 25-30%, Manage 15-20%.
Most courses spend 70% of their time on pretty visuals — worth at most 30% of the exam — and rush through Manage and secure, which is worth up to 20% and is where almost everybody loses points: workspaces, gateway, dynamic RLS, sensitivity labels.
In Route 300 the bank holds 165 / 165 / 165 / 105 questions. The weights, respected. The whole of Act 4 exists because the competition ignores it.
You have seen the demonstration. The consequence is worth repeating: if your practice test carries position or length bias, it measures your test-taking skill — and hands you a high number that makes you book the exam too early.
The 600 Route 300 questions go through two batch-level checks before anything is published. The validator is built into the authoring process: no future batch gets in unmeasured.
This is the objection I hear most from people who have failed: “I do not have time to study it all again.”
You will not have to. Every module has a proficiency exam: pass it and the module is marked as mastered, with full XP, without watching a single lesson. You spend your time where you actually fail — and the diagnostic tells you where that is in 12 minutes.
No other prep course lets you skip. They are paid by hours watched. This one is paid by you being ready.
What you get
| 124 lessons | 19 modules, 5 Acts, ~31,000 words, all in English |
| 600 audited questions | At the official weights, with no answer-key cue |
| 4 full practice exams | 50 questions each, in the exam's format and timing |
| 5 domain bosses | 72% gates that let no gap through |
| 6 real datasets | The fictional Rota Bike chain — one clean dataset per Act |
| 87 diagrams | Interface paths, schemas and before/after |
| Readiness Score | The number that says when to book |
| SQL track | 18 lessons — what the job asks for and the exam does not |
| Exam-day protocol | What to do in the 48 hours before |
Six files, one universe: Rota Bike, fifteen bicycle stores in Portugal, 5,000 orders, Jan 2024 to Jul 2026.
The Act 1 file arrives dirty on purpose — dates stored as text, prices with commas, 40 duplicates, 12 orphan keys. And the defects appear in the exact order the lessons teach you to fix them.
The 12 orphan keys survive the cleaning deliberately. They only surface in Act 2, when Power BI complains about the relationship — and you learn referential integrity with the error happening in front of you, not described on a slide.
What is probably holding you back
The offer
Route 300 is going live in the version you buy today: full track, 600 questions, 6 datasets, all in English, instant access.
The full platform — login, cloud progress, community — is being built. When it ships, the price goes to €197.
The first 100 people get in at €147 and keep:
This is not marketing scarcity: it is the number of people I can properly support while I finish the platform. When the 100 seats are gone, the price goes up and does not come back.
| Full track — 19 modules, 124 lessons, 5 Acts | €97 |
| 600 audited questions + 4 practice exams | €60 |
| 6 Rota Bike datasets | €29 |
| 87 diagrams + the full lesson set | €19 |
| SQL track — 18 lessons | €47 |
| Total value | €252 |
Instant access · In English · Unconditional 15-day guarantee
Price before tax. Hotmart adds VAT where it applies and converts to your local currency at checkout.
Get in, take the diagnostic, open Act 1, load the datasets. If within fifteen days you decide it is not for you, write to me and I refund it.
I would rather give you €147 back than have your name on a list of people who bought and never used it.
Proof
I have no testimonial to show you yet — Route 300 is going live right now, and I am not going to invent one.
What I do have is the material, open for you to judge:
When a student passes, their testimonial goes here. Not before.
Two paths from here
Tonight you take the diagnostic. Twelve minutes. It hands you a heat map and tells you straight: “you are fine on Prepare and Model. Your gap is Manage and secure — and that is 20% of the exam.”
Over the next weeks you work exactly there. Thirty-five minutes a day. You watch the readiness climb from 40 to 60 to 75. And one ordinary day it crosses 80 and the line appears: “Book it.”
You book. And this time you walk in knowing why.
You go back to what you were doing.
Six months from now you will still be putting it off. You will still have that half-finished course in some tab. You will still open some free practice test, score 85%, feel that cold “will it work this time?” — and not book.
Because deep down you no longer trust your own judgement. And you are right not to: nobody ever gave you an instrument worth trusting.
And the only difference between those two paths is not talent, or time, or money. It is whether you keep measuring yourself with a crooked ruler.
Give me the right ruler — €147Instant access · 15-day guarantee · In English
Final questions