What makes a great public school system? Is it a system in which most of the kids who do well, particularly in mathematics, get extensive tutoring from highly educated parents and paid tutors/extracurricular math courses? By that measure, LPS is excellent.
Is it a system in which, if motivated, any kid, without external help, can excel because the teachers and administration make self-motivated success possible? By that measure, LPS is very poor. The amazing test scores and college trajectories of most kids is predicated upon significant extracurricular tuition, either from Russian Math or individual tutors (highly educated, stay at home parents and/or paid tutors).