Here are some of the key findings from the Education Week Research Center's report:
* Wisconsin's fourth-grade students scored higher than the national average in reading and math on the National Assessment of Educational Progress (NAEP).
* Wisconsin's eighth-grade students scored higher than the national average in math but below the national average in reading on the NAEP.
* Wisconsin spends less per student on public education than the national average.
* Wisconsin has a higher student-to-teacher ratio than the national average.
* Wisconsin has a large number of teachers who are not certified in the subjects they teach.
Overall, Wisconsin's public education system received a C letter grade from the Education Week Research Center. This grade is based on the state's performance on the NAEP, per-student spending, student-to-teacher ratio, and teacher certification data.