I grew up through Homeschooling
Homeschooling, also known as home education, is the education of children from the home 
You mean one could turn a residential apartment to a school?
Its often a style of  education is usually conducted by a parent or tutor
Are there government approval or regulations that guides the conduct of H.S?
Its subject to state regulation and help that can or should be expected continues to be subject to legal debate.