There are hundreds of educators who are teaching subjects they don't have the proper credentials for in school districts across Illinois.
That's the finding in a new, Chicago Tribune investigation.
The newspaper blames the problem on loopholes in state laws and rules, and hiring practices. It shows some teachers work for months or even years before they receive the right credentials.
Last month, Education Secretary Arne Duncan asked states to prepare an "equity plan" by April 2015. He wants to make sure all students, especially minority and poor children, are not disproportionately taught by inexperienced, unqualified teachers.