The Rockdale County Public Schools Board of Education voted to raise the school portion of the property tax by about 2 mills, from 21 mills to 22.99 mills on, as part of the $126 million budget passed earlier this year. This is the first time since 2002 the rate has been raised, when it went from 21.48 to 21.80. The rate has remained around 21.48 mills, fluctuating by about a half mill, since 1993.