Complex sentence: Pro-Palestinian student groups at many colleges and universities have petitioned their schools to divest from companies with ties to the Israeli military in 2002--2004, but to date every university divestment campaign has been unsuccessful in swaying the schools'administrations' investment decisions.
Split into simpler sentences: Pro-Palestinian student groups at many colleges and universities have petitioned their schools to divest from companies with ties to the Israeli military starting in 2002. To date every university divestment campaign has been unsuccessful in swaying the schools'administrations' investment decisions.