Start by looking at what your school has to offer
Do not think of yourself as just a school that teaches a martial art. Think of yourself as a business that has a product to sell. Ask yourself, “What makes my school unique? Ask yourself, “How is my school different from all the other martial art schools in my area, other than teaching a different martial art style?" Ask yourself. “What can I offer that my competitors cannot offer?” Maybe it is a better price, more expertise, a babysitting service, convenience to major roads, or maybe because you specialize in teaching children. Once you have established your uniqueness, use direct and indirect marketing to ensure your target audience knows about your uniqueness.
Send email newsletter to past customers
One of the cheapest, often most successful ways to boost traffic is to send an email newsletter to past customers. Make the newsletter informative, not just an advertisement for the school. It is more effective to market to the people you know. Just your showing that you remember them may cause them to come back. Often their lifestyles have changed since they left the school, and now they may have new reasons to come back, such as wanting to lose weight, having children they want to start in training, or having more money that is discretionary. Remind them of the good times they had when they were students and tell them about your new offerings.