Cobb County voters will head to the polls this month to decide whether to continue a penny sales tax that officials hope will pay for hundreds of new classrooms and other projects in the Cobb and Marietta school districts.

Passage of the special purpose local option sales tax extension isn’t a sure thing, though.

Cobb school district officials are focusing their pitch to skeptical residents in south Cobb who have been dissatisfied by what they say is the slow pace of ongoing projects funded by the current tax.