Just an hour ago, I posted the story about how officials at the Tennessee Virtual Academy had instructed teachers to delete failing grades, allegedly to show “progress.”

The virtual school, run by the for-profit K12 corporation, is among the lowest-performing schools in the state.

This afternoon a state legislative committee blocked any discussion of the school altering grades and prevented efforts to limit enrollment in the school. Although the legislators refused to hear any reference to the school’s practice of deleting failing grades, they did hear a teacher who claimed that home instruction on a computer was a very positive experience for children with autism.

The legislators gave the virtual school an additional two years with no accountability, despite its poor academic performance.

The school gets about $5,000 per pupil and enrolls more than 3,000 students. It is known for its astute lobbying and well-targeted campaign contributions.

Another step backward for American education.