If you care about passing your Six Sigma exam, there is a good chance you are not underprepared. You may actually be overpreparing in ways that do not help your score.
Most serious candidates are not lazy. They just pour their effort into study patterns that feel productive but do not translate into exam performance.
In this email, I will walk you through three common exam prep mistakes and what to do instead, so you can:
- Stop burning time on low value study loops
- Focus on the parts of the exam that actually matter for your score
- Walk into test day more calm and confident
Mistake 1: Overpreparing by studying everything a little
The first mistake is trying to “touch” every topic in the body of knowledge every week.
It feels responsible. You flip through Define, then Measure, then Analyze, and so on. You skim chapters. You highlight. You watch videos. At the end of the week, you have done a lot, but you cannot point to one area that is clearly stronger.
A better approach is to choose a specific focus for each week instead of spreading your time across everything.
To fix this:
- Use your last practice exam or quiz results to identify two or three weak topic areas.
- Pick one topic as your focus for the coming week, based on: How often it appears on the exam. How uncomfortable it feels today.
- Design your study blocks around that topic only: Short explanations, a modest number of targeted questions, and a quick reflection at the end of each session.
Your goal for the week is not “touch every topic”. Your goal is “at the end of this week, I am clearly better at this one important area”.
Mistake 2: Treating reading and highlighting as the main job
The second mistake is spending most of your time reading and highlighting while doing very few exam style questions.
Reading helps you understand concepts, but exams test whether you can recognize and apply those concepts under constraints. Highlighting another page does not build that skill.
To fix this:
- Set a simple rule for your study sessions: At least half of the time is spent doing exam style questions, not just reading about them.
- When you read a section, immediately follow it with a handful of questions on that exact topic.
- For each missed question, write a short note: What was this question really testing. What clue in the wording did I miss.
You do not need to memorize the book. You need to be able to see a question and say “this is another example of that concept I have already worked with”. Practice builds that recognition.
Mistake 3: Ignoring time and test conditions until it is too late
The third mistake is doing most of your practice in “infinite time, open browser” mode and only thinking about timing and conditions at the end.
If you always pause, look things up, and come back later, you never train the skills you actually need on test day:
- Reading and understanding the question under time pressure.
- Choosing the right tool when you cannot look it up.
- Deciding when to move on and come back later.
To fix this:
- Build timed practice into your routine long before exam day: Do small blocks of eight to ten questions with a simple time limit. Occasionally run a longer, mixed set under exam like conditions.
- Practice with the same tools and constraints you will have in the real exam: If the exam is closed book, do some sessions without notes or internet access. If the exam is open book, practice with the reference materials you are actually allowed to bring, not with unrestricted materials.
Different providers (ASQ, IASSC, in person, online) have different rules. The key is that you should be comfortable working within the rules you personally will face, not in a perfect study environment you will not have on test day.
Putting it together: a more effective prep loop
Instead of overpreparing in ways that feel busy but do not help, you can use a simple loop:
- Pick one focus area for the week based on your practice results.
- Spend at least half of your study time doing questions in that area.
- Regularly practice under conditions that look a lot like your real exam.
- Adjust the next week’s focus based on what improved and what still feels weak.
This does not necessarily mean you spend more time. It means the time you are already investing starts to move your score and your confidence in the right direction.
Your next step
Look at your current study plan and ask three questions:
- Am I spreading myself across too many topics each week.
- Am I spending most of my time reading instead of working questions.
- Am I practicing under conditions that are too easy compared to my actual exam.
Then, before your next practice block:
- Pick one topic to focus on this week.
- Plan at least one timed practice session that reflects your real exam constraints.
After you try this, hit reply and tell me:
- One change you made to your prep, and
- One way it changed how your practice exam felt.
I read these, and your answers help me decide what to write next.
Best, Ted.
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