Newsela provides over 1,000 non-fiction and current event articles scaled at five different Lexile reading comprehension levels. The same article may be assigned to multiple students at varying reading levels. After reading articles, students may then complete Common Core-aligned quizzes. Teachers have the ability to assign articles and monitor student progress.
New features of Newsela include: Primary sources, Historic Biographies, Famous speeches and the Time Machine (articles written through history.) Articles are also available in Spanish.
Many of the resources are free, but a PRO version is available.
This is a site you're going to want to use with your students!