A focused 2-wave acquisition playbook to fill kids trial classes the week after school starts and again after winter break. The two highest-intent windows of the year.
Start Free — No Credit CardParents don't wake up Googling "karate near me" — they notice your card on the counter, hear it from another parent at school pickup, or remember it the week before back-to-school. A postcard with a clear kids trial offer that lands the right week (back-to-school, January, fall season start) does what no Facebook ad budget can: it puts your school on the consideration list at the moment a parent decides to enroll.
2-wave neighborhood mailing — back-to-school + post-winter-break windows
"Free first 2 classes — ages 5–12." Photo of kids on the mat in your gi, simple offer, QR straight to the trial-class signup.
Front desk calls anyone who scanned the QR but didn't book. Pre-loaded script: "Saw you got our card — we have Tuesday at 4 with Sensei Mike, would that work?"
"How martial arts changed my son's confidence at school." Real parent quote, real kid in your school, photo of a belt promotion.
"2 free classes + free uniform with enrollment." Concrete add-on, expires in 14 days. After this, the contact moves to the dormant list.
Wave timing, copy direction, and front-desk call scripts come pre-configured. You only customize photos, your offer, and your branding.
Bring your own list (CSV from your studio software or CRM) or pick a 3–5 mile radius around your studio for new-mover and acquisition campaigns.
Postcards print and drop into USPS within 1–2 business days. The follow-up phone calls schedule themselves a few days later.
Pre-loaded scripts handle the common objections. Booked clients drop back into your studio software.
A typical school mailing 2,000 households within 3 miles the week before school starts. Here's what one PostKnock 2-wave acquisition campaign looks like:
18:1 ROI — and these students will bring siblings and friends.
Run your own numbers in the ROI calculator.
Free to explore — you only pay when you're ready to send. 30-day money-back guarantee.
Single-wave postcard campaigns · Unlimited contacts · From $1.05/piece
Everything in Free + calls, sequencing · From $0.79/piece
Per-piece pricing includes printing + USPS First-Class postage. Full pricing details →
Drop in your branding, photo, and offer. The live designer handles the rest.
Try the live designer →Kids Trial Class is one of several PostKnock playbooks for martial arts. See the full lineup on the martial arts hub.
See all Martial Arts campaigns →PostKnock martial arts postcards start at $1.05 per 4x6 postcard on the Free plan and drop to $0.79 on Pro. No setup fees, no minimums, no contracts. Pricing includes printing and USPS First-Class postage.
The two highest-intent windows are 1) the week before school starts (mid-August through early September depending on your district) and 2) the first two weeks of January. Parents are actively shopping kids activities during both. Schools that hit those windows typically see 2–3x the response of off-cycle mailings.
Photo of kids on the mat in your gi, an age range ("Ages 5–12"), a clear simple offer ("2 free classes"), your school name and phone, and a QR code to a trial-class signup. Avoid jargon: "BJJ rolling" and "kihon" don't mean anything to a parent who's never trained.
Most direct-mail list providers (Anchor, Lob's address verification + filters, even your local USPS EDDM tool) can filter to households with children under 18 within a radius. PostKnock supports both EDDM-style geo mailings and named-address campaigns from your existing student-family list.
Yes — especially when mailed to the whole family. Inviting siblings, grandparents, and aunts/uncles to belt promotions creates a ceremony moment that quietly enrolls the next student. Schools running quarterly family-day mailings see 15–25% sibling enrollment within 60 days.
Stop competing for shrinking Facebook reach. Mail the right neighborhood the right week and watch your trial calendar fill up.
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