Charter schools are prohibited from excluding students from enrolling, but they don't have to keep students who are disruptive. Teachers who form public school academies not only will have control of rules, personnel matters and the clientele, they also will have control of the purse strings. That means salaries, for themselves and for nonclassroom personnel, too, as well as funds for textbooks, materials, technology and everything else on which a school spends money. A class size of 20 requires a staff of 15 teachers. Fool around with the numbers for yourself, but it sounds feasible to me.
Recent research identifies several problem areas.
Financial concerns, especially related to securing and maintaining a facility, are high on the list. Another concern is the extra time and effort required to get a new program going and keep it running. And then there is the controversial nature of charter schools. This adds pressure to an already pressurized situation. For these time and pressure problems, teachers would need to develop a strong support system among themselves.