No excuses!

The Noble Network of charter schools in Chicago is proud of its high test scores. Mayor Rahm Emanuel says Noble has some “secret sauce” that produces great success.

Could this be it?

A Noble charter has fined the mother of a student $3,000 for his rule-breaking.

The mother is unemployed. She can’t pay.

She says she thought that public education was free.

Noble has its high standards. It collected $190,000 in 2011.

Pay or get out.

Is that the secret sauce?