LAFAYETTE, La. (AP) — Records show more teachers have resigned from their jobs in Lafayette Parish public school classrooms in the past two years than have resigned in any comparable period in recent history.

The reason for it is in dispute.

A teacher union representative tells The Advocate an unpopular teacher evaluation system and state-mandated policy changes are prompting more teachers to resign, but school system administrators say teachers are citing other reasons for leaving.

According to data compiled by the Lafayette Parish Association of Educators, a total of 343 teachers resigned between January 2012 and December 2013. That compares to 225 resignations in the three-year period between January 2009 and December 2011.