Education

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CORRECTS DATE TO MARCH 31 INSTEAD OF MARCH 30 - In this Monday, March 31, 2014 photo, hundreds of University of Michigan students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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CORRECTS DATE TO MARCH 31 INSTEAD OF MARCH 30 - In this Monday, March 31, 2014 photo, University of Michigan student Sean Corcoran sits on a couch in Regent's Plaza as hundreds of students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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This undated photo provided by Landmarks Illinois shows the 125-year-old Hamilton Primary School in Otterville, Ill. The preservation group Landmarks Illinois announced Tuesday, April 1, 2014, that the school is on the list of the 10 most endangered historic places in Illinois. The school opened in 1835 and the current building was built in 1873 with most of the original building's limestone. It closed in 1971. (AP Photo/Landmarks Illinois, Frank Butterfield)

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In this March 30, 2014 photo, hundreds of University of Michigan students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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In this March 30, 2014 photo, University of Michigan students Melissa Strauss, left, and Jillian Goldberg wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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In this March 30, 2014 photo, hundreds of University of Michigan students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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In this March 30, 2014 photo, University of Michigan student Sean Corcoran sits on a couch in Regent's Plaza as hundreds of students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT

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In this March 30, 2014 photo, University of Michigan students Madeleine Tayer and Andy Gong sit back to back on their laptops as hundreds of students wait outside the Michigan Union overnight for tickets to see President Barack Obama speak on campus, Wednesday in Ann Arbor, Mich. Obama plans to visit the school to discuss his proposal to raise the national minimum wage. (AP Photo/The Ann Arbor News, Courtney Sacco) LOCAL TV OUT; LOCAL INTERNET OUT