If you read the minutes from the Lake Washington School District Board of Directors Meeting for January 9, 2017 (see the link provided after this comment), you will see that the woman who wrote this letter was in fact an Instructional Assistant at Redmond Middle School from October 8, 2001 through November 30, 2016, when the minutes say she retired. So when she heard these announcements, it was not as a parent, but as a paid Lake Washington School District staff member working at the school. Since she apparently no longer works for the district, she probably can spread her vitriol with impunity.
http://www.lwsd.org/SiteCollectionDocuments/About-Us/Board-Packets/2016-17/Board-Packet-01-09-17.pdf