If the school doesn't have a counselor, visit the principal instead. Finally, put a resume into each teacher's school mailbox. After you've visited all the schools in your target area, take your resume around to the local grocery stores. Many have bulletin boards on which people place sale or service fliers. Some of these places have policies against posting fliers but many are accommodating.
Costs There are almost no expenses in a tutoring business.
You don't buy textbooks because the students bring their own. You don't have transportation or site-rental costs because tutees come to your home. Just about the only expense you have is the printing of your resume. One batch of a thousand one-page resumes should last you about a year. After that, you'll want to update it before reprinting.