Could I just start offering classes at the community center?

Hello I work full time and have the "Engineer/Specialist in humanities/International services visa". I have been here 8 years and have 2 children. And what I have learned is there are many language schools but none that are easy to use or low priced. I wish more kids wanted to play with my kids and were not scared when they hear English.

So my idea is to offer cheap fun English classes to elementary school kids at my local community center outside my other job.

I would charge like 100yen or something crazy cheap for the hour. And parents dont need to sign up or anything. Just pay on the day you decide to come. Seems one of the rooms can fit 50 people, so maybe its the first 50 kids who show up? But I KNOW 50 will not come hahaha.

Is this possible? I would for sure track the money and add it to my taxes.

Thanks for the help!!!

by BCRtravel7