My partner and I started a school together, with him as the master instructor and me as the business manager/assistant instructor. He'd been teaching TKD part time on and off for at least 10 years at that point under different teachers, and I'd been teaching part time for about a year as well. Our teacher had been encouraging him to open a school for a while, and I came into some money and was like "hey, let's give it a try". (I'd taken some marketing classes in college and worked as a shift manager at a store, which did not prepare me nearly as well as I thought it would for starting a new business...) So, we got a bunch of terrible business advice from our teacher, made a totally unrealistic budget & business plan, formed an S-Corp, found a location, and finally signed a lease we didn't fully understand on a too-big spot in a shopping center. We ate a lot of ramen noodles for a long time, and did other work to keep a roof over our head. Eventually we 1) got better business advice from other people, 2) passed the 100 student mark and 3) were able to move into a smaller, cheaper location in a different shopping center. Finally, things got much easier, & we could actually pay ourselves something close to a living.