Power BI Depth: PL-300 Certification Readiness
Signature Course No. 322 — A Signature AI Socratic Coaching Course.
No experience needed — your coach starts where you are.
A New Kind of Learning
Socratic coaching, delivered by an agentic AI coach.
Not a course you watch. An AI coach you work with.
The Lighthouse Coach begins by discovering how you think about the subject, teaches what is missing, and gives you realistic practice before asking you to prove that you can use it. You may test out of concepts you already understand, while capstones turn the learning into a practical plan, decision, conversation, or other real-world result.
The curriculum is deliberately authored; the AI delivers it through coaching. It is not an AI randomly generating lessons.
A coach that teaches by asking — not by lecturing
The Lighthouse Coach is an AI Socratic coach built on Cognosco Learning's Power BI Depth: PL-300 Certification Readiness course, in the Personal Effectiveness & Well-Being category. It does not play videos at you. It holds a conversation: it asks you a question, listens to your answer, names the misconception it hears, affirms what you got right, and asks the next question — the way a great coach works in the room.
An examination — and an employer — can tell in minutes whether your model was designed or merely accumulated. The PL-300 examination certifies a data analyst working in Power BI at associate depth, across four published areas: prepare the data, model the data, visualize and analyze the data, and deploy and secure. This course teaches all four as one professional practice, in the order the work actually flows — and at the depth the outline intends, not the depth a first course can reach.
It starts with the outline read as a working map. The skills outline is not a syllabus of facts; it is a job description written as a set of verbs. Every line is a claim you must be able to evidence — work actually done, unaided, on fresh data — the areas are weighted, and readiness is a verdict you reach from evidence, not a feeling you wait for. You will build that evidence file concept by concept, on one running model: Ferroline Industrial Supply, held still at $816,000 of 2025 revenue, 42,000 units, 5,100 orders, and 61,200 lines, so every result can be checked against ground truth.
It works in two movements. First, Module 1 — Prepare and Model: From Messy Sources to a Fast, Correct Semantic Model — work through Concepts 1–9, finishing with The Readiness Model; then, Module 2 — Measure, Publish, and Protect: Advanced DAX, Optimisation, Deployment, and Security — work through Concepts 10–18, finishing with The Published, Secured Report.
Both capstones produce real artifacts — a complete readiness model package for Ferroline: the preparation record, the quality rulings, the architecture specification, the measure pack with predicted results, and the reconciliation sheet that proves the rebuilt model still is Ferroline; and the published, secured report package: the completed measure set, the optimisation record, the report and output design, the deployment and refresh routine, and the security design with its signed test log.
The honesty standard is part of the course. This course teaches the analyst's job, using the outline as its map — not examination technique dressed as a job. You will find no guessed questions here, no claims about what any particular sitting contains, and no shortcuts around the work: the durable way to be ready for a scenario examination is to be able to do the job the scenarios describe. Service facts that can drift are flagged in the course itself as facts to verify at the time, not memorised figures.
The course is self-paced and always on — roughly 30 minutes per concept, about 9 hours in full, taken in as many sittings as you like. You can type your answers, or talk out loud: the Voice Coach speaks its questions and listens to your spoken replies. Learners who already know the material can test out concept by concept.
Power BI Depth: PL-300 Certification Readiness is part of The Lighthouse Signature Series — the online counterpart to the one-day, in-person learning Cognosco Learning has delivered since 2002.
Course Facts
One full concept, coached end to end — free: verify your email and we’ll send you a link to start.
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Diagnose → Learn & Practice → Prove → Capstone
Every learner moves through the same discipline a Cognosco instructor would insist on in the room.
Diagnose
The Coach starts where the course starts: with your evidence. Take the four published areas — in which one is your current evidence, work you could show rather than topics you have read, strongest, and in which thinnest? Name one Power BI task you can perform only while following steps you look up, and what exactly is missing; and say what your last feeling of readiness was based on, and how the outcome judged it. Every concept opens with three questions that locate where you actually stand, and your answers shape how deeply the Coach works the concept with you. Everyone begins with Module 1 — no skipping the foundations you only think you have.
Learn & Practice
Work each concept in conversation with the Coach — spoken or written — then practice it against realistic situations until it holds up.
Prove
Every concept ends in proof: answer the check cold and demonstrate the skill. Know it already? Test out and take credit immediately.
Capstone
Finish with two capstones — The Readiness Model for Module 1 and The Published, Secured Report for Module 2 — that pull the whole course together, and earn the certificate.
What You'll Learn
Prepare, model, measure, publish, protect — in the order the work flows. Every discipline in this course hangs on one sequence: bring the data in on purpose and rule its defects as recorded decisions; architect the model so its behavior can be predicted; write measures whose results you state before you run them; then put the model into the world — optimized, published, refreshed, and secured — and prove each stage against ground truth.
Module 1 takes prepare and the first half of model. The outline read as a working map; the Ferroline running model in full; storage modes, sources, and parameters; Power Query profiling, shaping, and folding; data-quality rulings with an audit trail; grain, cardinality, and filter flow; calculated objects and field design; evaluation context; and CALCULATE mastery — filters added, replaced, removed, and left alone, on purpose.
Module 2 takes the rest of model, all of visualize and analyze, and all of deploy and secure. Time intelligence at depth; iteration, ranking, and semi-additive measures; optimization by measurement; report design, interaction, and accessibility; honest analytics; paginated reports and dashboards matched to their jobs; workspaces, deployment pipelines, gateways, and refresh; row-level and object-level security tested as the restricted user; and the certified analyst's standard itself.
And it holds its boundary throughout. This course assumes No. 113-level fluency or equivalent experience — you can connect and import, shape in Power Query, build a star schema, distinguish a measure from a calculated column, and write core DAX. It does not teach any other tool's syllabus, and it covers no Power BI administration beyond the analyst's chair: where companion skills appear, they are taught as the PL-300 outline frames them.
What you will learn
- Prepare data at analyst depth — storage modes chosen on purpose, profiling before shaping, folding queries, and data-quality decisions recorded and owned
- Model data at analyst depth — grain, cardinality, and cross-filter behaviour reasoned from the data; star schema held under pressure; calculated objects placed correctly
- Write advanced DAX — evaluation context predicted before it is run; CALCULATE with deliberate filter control; time intelligence on a marked calendar table; iteration, ranking, and semi-additive measures
- Optimise a semantic model with evidence — size, cardinality, and query behaviour measured, the largest cost removed first, and every optimisation re-proved against the numbers
- Visualize and analyze at depth — interaction, accessibility, and analytical features used honestly, and paginated output chosen where it — and only it — fits
- Deploy, maintain, and secure — workspaces, pipelines, gateways, and incremental refresh run as a routine; row-level and object-level security designed and tested as the restricted user
- Prove readiness against the published PL-300 outline — an evidence file, area by area, and an honest verdict on your own sitting
Everything in the course
- All 18 concepts of Power BI Depth: PL-300 Certification Readiness, in 2 modules
- A starting-point check first — the Coach finds where you actually stand before teaching
- Learn, Practice, Prove for every concept — no passive video watching
- A test-out on every concept: prove you know it and move on
- The Voice Coach: talk with the Coach out loud — it speaks, listens, and replies
- A personal Learner Record of your work across the course
- Two capstone exercises: The Readiness Model and The Published, Secured Report
- A printable session summary whenever you pause
- The Lighthouse Coach completion certificate (Signature Series)
- Your progress is saved as you go — stop anytime, resume where you left off
Built for working analysts preparing at depth
Working Power BI builders preparing for PL-300 — analysts who already build reports and now need the full outline at depth, including the areas daily work never forced them to learn: security, deployment, optimisation; and analysts whose employers are standardising on certified practice, who must not only pass an examination but be able to show the working habits the credential claims: reconciled measures, tested security, documented models.
Report builders who inherited models they did not design — who need the depth to diagnose a slow, wrong, or fragile semantic model and rebuild it properly.
Team leads responsible for a Power BI estate — workspaces, refresh, endorsement, and access — who need the deploy-and-secure area as working knowledge, not as an administrator's rumour. This course assumes comfort with everyday arithmetic you can check with a pencil; it does not assume a programming background.
Prefer to learn live and in person? The same material anchors Cognosco's one-day programs — browse the in-person catalog.
Start with The PL-300 Analyst's Job
$195 — introductory price. One payment. No subscription, no password to manage.
Here is exactly what happens when you enroll:
- Pay securely with Stripe — you are taken straight into the course
- Create your learner profile and begin the Module 1 starting-point check
- Save the access key you are given — it restores your enrollment on any device
- Learn at your pace; your progress is stored in your browser on your device
For the full voice experience, use Chrome and allow the microphone when asked. Typing your answers works everywhere, all the time. Questions before you enroll? Email hello@cognoscolearning.com.
Before you enroll
What is a Socratic coaching session?
A conversation, not a video. Your coach asks a question; you answer — out loud by voice, or by typing — and the coach responds to what you said: naming the misconception it hears, affirming what you got right, and asking the next question. You advance only when you have mastered each concept, so a finished course means the learning held.
How long does it take — and how long do I have?
About 30 minutes per concept. Learn in sittings of any length; your progress is saved as you go. You have a full year from purchase to finish, and you can revisit and retake within that year.
What does the certificate verify?
That you completed every concept and both capstones of this course. Anyone can confirm a Cognosco certificate online — enter its certificate ID on our verification page.
What if it isn't for me — what are the refunds?
If you have not started, cancel for a full refund within seven days of purchase. Once you have started, there is no cash refund — stop before finishing and we credit the full amount you paid toward any other course in the library (credit valid one year from your original purchase). Once you complete the course, no refund or credit applies.
More Signature Courses are coming
Power BI Depth: PL-300 Certification Readiness is Signature Course No. 322. Leave your email and we'll send you news of future Signature Courses and Lighthouse updates as they are announced — nothing else.