That's why I got out of public education. I'd only teach at a public school if I lost my job here and the school had a good academic record.
I taught in a suburban public school in the South. The first semester there were 660 Fs for 610 students, and this was on a block schedule, so they only had 4 classes. That means the average student failed 25% of their classes. I had one class with a failure rate of over 30%, and those were failures under 50%, so they weren't close to a D.
Where I taught any student that failed an assignment could come after school twice a week (with free bus transportation at 5pm when it was over) and retake any assignment and get a 73, which was the lowest C. Eventually the administration pushed for us to simply give them a 73 on the retake no matter what. This school was ranked by Newsweek as one of the top 1,000 public schools in America 2 years before I got there.
limitgov:At our school, there is an email sent out to all teachers, if more than 10% of your students fail, you must meet with the principal and explain your actions. Your grades will be changed to reflect no more than 10% of your students failing. just a little fyi