Group seminars · Troy, MI
A kids self-defense seminar for your group.
One hour. A topic you pick. Taught by Mr. Strecker, who has taught kids martial arts for 34 years. Built for groups of children ages 5 to 15.
$10 per participant · 15 participants minimum
Who books a seminar
Scout troops, clubs,
schools and teams.
A kids self-defense seminar is for any leader of a group of kids who wants them to learn how to stay safe and speak up for themselves. Your group comes to our Troy school. Our instructor does the teaching. You pick what the kids learn.

You choose the topic
What should the kids
walk away knowing?
Pick one topic or mix a few. Every lesson is matched to the ages in your group, so a group of 6-year-olds gets a different seminar than a group of 13-year-olds.
Confidence
Kids practice standing tall, using a strong voice and looking an adult in the eye. More on building confidence.
Discipline
Kids practice listening the first time, following directions and finishing what they start.
Focus
Short games and drills that teach kids to ignore distractions and stay with one task.
Stranger danger
What to do if someone they do not know comes up to them. Kids practice saying no, getting away and telling a trusted adult.
Bullying
How to stand up for themselves with words and body language, and when to get an adult. More on bully prevention.
Physical self-defense
Simple moves to protect themselves and get away. Taught step by step and matched to the ages in the room. More on kids self-defense.
How it works
Four steps.
No guessing.
Most kids self-defense seminars happen on weekends or Friday evenings. We set the date and time together.
Send your request
Tell us your group size, the ages, your topic and the dates you like. Sending the form does not hold a date yet.
We check the calendar
We email you to say if the date is open. If it is not, we offer other dates that work.
A deposit locks your date
Once you pay the $150 deposit, your date is held for your group. The rest is due one week before the seminar.
Waivers, then seminar day
We send a waiver for every participant. Families sign them before the seminar. Then your group comes in and we teach.
What’s included
Kids self-defense seminar details.
- About 60 minutes at Mastery Martial Arts in Troy
- Taught by Mr. Strecker himself
- The topic or topics you choose
- Lessons matched to the ages in your group
- No experience needed
- A Free 30-Day Pass for every participant, after the seminar, if they want to keep training
Good to know
- One adult from your group stays for the whole seminar.
- Parents do not have to stay, but we encourage it. They are welcome to watch.
- Every participant needs a signed waiver.
- Need more than an hour? Ask us and we will plan it with you.
- Want us to come to you? Ask. We can do this when our schedule allows. We discuss the price with the host.
Group seminar
About 60 minutes, taught by Mr. Strecker.
The minimum total is $150. A $150 deposit holds your date. Any balance is due one week before the seminar. Only participants pay.
Your instructor
Mr. Strecker
teaches every seminar.

Denny Strecker has taught children martial arts since 1992. That is 34 years of working with kids, from nervous 5-year-olds to teenagers.
He is the author of two Amazon best-selling books, How to Double Your Child’s Confidence in Just 30 Days and From Chaos to Calm, and runs Mastery Martial Arts in Troy, which has a 4.9-star rating on Google from 282 reviews. Read more about Mr. Strecker.
Mastery is a kids-only karate school. Your group learns in a space made for children, from someone who teaches children every week.
After the seminar
If they loved it,
they can keep going.
Every participant gets a Free 30-Day Pass after the seminar. Families who want to keep training can try real classes at Mastery. There is no obligation. See our kids karate programs or learn about our Troy school. Questions? Read our kids karate FAQs or see what Troy families say.

Request your date
Check if your
date is open.
Fill out a short form and we will email you to confirm the date.
Sending the form does not hold your date. We check the calendar first. Your date is held once the $150 deposit is paid.
It takes about two minutes.
Seminar questions
What leaders ask.
What ages is the seminar for?
Ages 5 to 15. We match the lesson to the ages in your group.
How many kids do we need?
The minimum is 15 participants, at $10 each. We do not have a set maximum yet. Tell us your group size and we will confirm it fits.
How long is the seminar?
About 60 minutes. If you need more time, ask and we will plan it with you.
Who chooses what the kids learn?
You do. Pick confidence, discipline, focus, stranger danger, bullying, physical self-defense, or a mix. Every lesson fits the ages in your group.
Does anyone need martial arts experience?
No. The seminar is built for beginners.
When do seminars happen?
Most are on weekends or Friday evenings. We set the exact date and time with you.
How does payment work?
A $150 deposit locks your date on our calendar. Any balance is due one week before the seminar. Only participants pay. Hosts and leaders do not.
Do parents have to stay?
No, but we encourage it. One adult from your group must stay for the whole seminar.
Is there paperwork?
Yes. Every participant needs a signed waiver. We send the waivers after you book.
Can you come to our location?
Sometimes. On-site seminars cost extra, and we discuss the price with the host. They also depend on our schedule. Choose that option on the form and we will follow up.
What happens after the seminar?
Each participant gets a Free 30-Day Pass if they want to try classes at Mastery. There is no obligation.