boycotted class
... that in 1963, over 200,000 students of the Chicago Public Schools boycotted class to protest segregation and poor conditions?
... that in 1963, over 200,000 students of the <a href="./Chicago_Public_Schools" id="mwBCw" rel="mw:WikiLink" title="Chicago Public Schools">Chicago Public Schools</a> <b id="mwBC0"><a class="mw-redirect" href="./Chicago_Public_School_Boycott" id="mwBC4" rel="mw:WikiLink" title="Chicago Public School Boycott">boycotted class</a></b> to protest segregation and poor conditions?