text: Nearly three months ago , when the administration at the National Autonomous University of Mexico proposed a raise in student tuition from 2 cents to about $ 150 a year , students closed down the classes with a strike , affecting 267,000 students and 30,000 professors .
  
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  When a raise in tuition was proposed from 2 cents to about $ 150 a year , students went on strike due to the unfairness of the proposition .