Students and teachers at Chamblee Charter High School will be in new classrooms when a $70 million building project is completed in 2013, but focusing on what’s coming has been difficult because of what’s been disappearing.

Nearly a dozen break-ins have plagued the school in recent months with thieves walking away with computers, keyboards, calculators and other electronics and equipment.

Five of the thefts occurred over the Labor Day holiday weekend and six over the Columbus Day weekend, according to Channel 2 Action News.

The targets have been the 32 mobile classrooms students and teachers have been using as the construction continues around them on Chamblee Dunwoody Road.

Teachers in the classrooms are increasingly frustrated over the thefts. They say they want to feel secure and want assurances that the district is doing all it can to prevent future break-ins. They are also concerned the missing equipment won’t be replaced.

District spokesman Walter Wood said a dollar figure has yet to be attached to the missing equipment, but he said the district is taking steps to increase security. He said additional patrols are being made and motion sensor alarms and new fencing locks are being installed.