Spend per pupil is a factor, but I have to agree with the parent poster, if you remove bad, disruptive, or underperforming kids from a school, and replaced them with disciplined, over-achieving students, the rest of the student body benefits. This is independent of school funding.
Private schools, even ones that receive less tuition per student than public schools of the same district prove this point because they can set a higher bar and more readily kick out disruptive students.
Private schools, even ones that receive less tuition per student than public schools of the same district prove this point because they can set a higher bar and more readily kick out disruptive students.