A former bookkeeper for the Castleford School District has entered a not-guilty plea after being charged with embezzling money from the school district.  54 year old Brenda Thompson entered the plea in Twin Falls County 5th District Court.  She is charged with felony grand theft for allegedly overpaying herself $34,000 dollars between 2006 and 2009.  If found guilty Thompson could be sentenced to up to 14 years in prison and find $5,000 dollars.