Three stories we think you should know about as you start the week:

Borders a test for Chicago real estate market? With Ulta, Michaels, and Home Goods eyeing 15 Chicago-area spots vacated by Ann Arbor-based Borders Group Inc., currently in liquidation, Crains Chicago Business says it’s a sign of how the retail real estate market is doing in Chicago.

Michigan teachers leaving the state. Hundreds of public school teachers thoughout the state are moving to places where there are jobs, the Associated Press reports. Since its peak in 2004-2005 school year, the state has lost almost 10,000 jobs, or 9 percent, of its public school teachers.

Illinois braces for fallout from S&P downgrade. With stock markets roiling over the Friday night announcement by Standard & Poor’s of its downgrade of U.S. credit rating, Illinois-based business and analysts provide their opinion of what this means in this Chicago Tribune story.