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An unexpected error has occurred at <http://eric.ed.gov:80/default.aspx?q=%22%22&ff2=subHigh+Schools&ff3=subStatistical+Analysis&ff1=dtySince_2015&ff4=souUniversal+Journal+of+Educational+Research&ff5=autAltin%2C+Fatih&ff6=autTekin%2C+Selim>.

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