This is just a manner of homeschooling.

My church has a homeschool group and they have an open house every year where people sign up for classes independently offered by various tutors.

The tutors hold classes for multiple students

Technically it's homeschool because all children are out of the public school system and responsibility for their education has not been given to a private school.

But in reality, many kids take classes together with various tutors the church group organizes.