[rahimnathwani]

The feedback is provided by the market mechanism. Private schools and charter schools that don't do a good job would fail to retain and attract students, and shut down.

For government-run schools, most of the students have little or no choice. Standardized tests (like SBAC) show poor results in California (most kids fail to meet grade level standards in the test), but parents have little ability to change how school districts are run.