Cobb County Georgia Schools Calendar

Two public school systems serve this part of metro Atlanta: the Cobb County School District, one of the largest in Georgia with more than 100,000 students, and the much smaller Marietta City Schools, with roughly 8,000. Their calendars are distinctive for an early August start, a full-week fall break in September, a second full-week break in mid-February, and scheduled digital learning days that replace some classroom days.

School District Structure in Cobb County

Georgia mostly organizes schools by county, but a few cities run their own systems, and Marietta is one of them. Cobb County therefore has two districts operating side by side:

• Cobb County School District (CCSD): The county system, headquartered in Marietta, serving most of the county, including Kennesaw, Smyrna, Acworth, Austell, Powder Springs, Mableton, Vinings, and unincorporated areas.
• Marietta City Schools: An independent city system that serves students living inside the City of Marietta.

Each district has its own elected board of education, its own superintendent, and its own calendar. The Cobb County Board of Education and the Marietta Board of Education set policy, approve budgets, and adopt each year’s calendar. Regular meetings are generally held monthly, and agendas and minutes are posted on each district’s website. Families who live in the city of Marietta should confirm which district serves their address, since a few miles can mean a different school system, different start date, and different fall break.

Cobb County is suburban, with some dense urban corridors along I-75, I-285, and I-575, and a mix of older neighborhoods and fast-growing areas. Large schools, heavy bus traffic, and a commuter workforce make calendar timing important for families. That is part of why Cobb and Marietta have lined up their spring break and many other dates with other metro Atlanta districts.

Academic Calendar Structure

For 2026-27, the Cobb County School District year begins on Monday, August 3, 2026, and ends on Wednesday, May 19, 2027. Marietta City Schools opens a day later and closes a week later: its year begins on Tuesday, August 4, 2026, and ends on Friday, May 26, 2027.

Both districts divide the year into two semesters. CCSD’s first semester includes 88 school days and ends before the winter holidays. The second half of the year begins on Tuesday, January 5, 2027, after the December break. Marietta’s first semester has 87 school days and ends before its holiday break.

Georgia’s standard is 180 instructional days or the equivalent in hours. Cobb’s published calendar shows 176 student instructional days for 2026-27, which works under the state’s hours-based option, since school days are long enough to meet the instructional-time requirement. Teachers work more days than students, and Cobb’s calendar guidelines describe 185 teacher workdays. Bell times are set school by school, so check your child’s school page for exact start and end times. Cobb is large enough that elementary, middle, and high school hours vary by campus.

School Holidays and Breaks

For CCSD in 2026-27, the published calendar includes:

• Labor Day, September 7, 2026
• Fall Break, September 21-25, 2026
• Election Day, November 3, 2026, a student holiday and staff workday
• Thanksgiving Break, beginning the Monday before Thanksgiving Day
• Winter holidays, December 21, 2026 through January 4, 2027
• Martin Luther King Jr. Day, January 18, 2027
• Winter Break in February, February 15-19, 2027, which begins on Presidents’ Day
• Spring Break, April 5-9, 2027

Marietta City Schools follows a similar pattern with its own dates: fall break is September 21-25, 2026, the holiday break runs December 21 through January 1, and spring break is April 5-9, 2027. Memorial Day falls after the last day of school in both districts.

The February break catches many newcomers off guard, since most of the country does not have a full week off in the middle of winter. Dates change annually, so use each district’s board-adopted calendar for final planning.

How to Find the Official Cobb County School Calendar

For the county system, go to the Cobb County School District website, cobbk12.org, and look under the calendar section. The board adopts the following year’s calendar in advance, and the approved version is posted as a PDF. For Marietta City Schools, use the Marietta City Schools website, mariettacityschools.org. Both districts also post school-level calendars for events, sports, and performances, which supplement the district calendar.

Many parents compare districts when they have relatives, work, or plans in other parts of the state. The Cobb County schools calendar, which serves a suburban system of more than 100,000 students, looks very different from the Clinch County schools calendar for a small rural district in south Georgia of about 1,250 students. Both are set to open on August 3, 2026, and both follow the same Georgia minimums, but they differ sharply in size, break structure, and communication. Cobb adds a fall break, a mid-February break, and digital learning days, while Clinch County runs a smaller, simpler calendar.

Early Release Days, Teacher Workdays, and Professional Development

Teachers report before students return in early August for planning and training, and CCSD’s calendar includes additional staff workdays during the year, such as Election Day on November 3. With teachers working more days than students, those non-student days are where much of the planning, training, and grading takes place. The district also publishes a separate early release schedule, and families should check it at the start of the year, particularly if they rely on after-school care.

Cobb has also added digital learning days to the calendar. The 2026-27 calendar lists digital learning days on August 17, October 12, and December 1, 2026, and March 1, 2027. On those days, students learn from home instead of in the building, and the days count toward instruction. Marietta City Schools has its own schedule, so check it separately. Georgia expects districts to provide professional learning for educators, but each board decides where those days fall.

Emergency Closures and Weather Days

Cobb County is inland, so hurricane evacuations are not part of the planning. The main threats are winter ice, occasional snow, severe thunderstorms, and tornado warnings. Metro Atlanta has learned that even a light glaze of ice can paralyze roads, especially on hills and bridges, and a district with hundreds of buses has to weigh conditions across a county that spans from Kennesaw to Austell.

In each district, the superintendent decides whether to delay opening, close schools, or move to remote learning, after consulting transportation staff, public safety officials, and forecasts. The district’s digital learning infrastructure gives it more options than a simple snow day. Announcements typically go out through:

• The district’s automated phone, text, and email systems
• Each district’s website and social media accounts
• Atlanta television stations, including WSB-TV, 11Alive, and FOX 5 Atlanta
• Local news outlets such as the Marietta Daily Journal and the Cobb County Courier

Keep your contact information up to date in the student information system, because that is how alerts reach you. Lost days are generally absorbed through built-in flexibility, digital learning options, or the other tools Georgia allows districts to use to meet instructional requirements. Each board makes those decisions as needed.

Graduation and End-of-Year Schedule

With CCSD finishing on May 19, 2027, high school final exams fall in the middle of May, and End-of-Course assessments are scheduled within district and state testing windows. Marietta City Schools finishes a week later, so Marietta High School’s exam and graduation timeline runs later. Cobb County high schools hold graduation ceremonies in May, and the district publishes a commencement schedule. Large venues such as the Kennesaw State University Convocation Center and the Cobb Energy Performing Arts Centre have been used for ceremonies, though venues and dates should be confirmed each year.

Elementary and middle schools hold promotion or recognition events. Report cards and grades are available through each district’s parent portal, and the school office can help families set up an account.

Back-to-School and Registration Information

Families new to Cobb County register through the district’s online process with support from the school or the district’s registration staff, and Marietta residents register through Marietta City Schools. Re-enrollment for returning students typically opens in the spring. New-student registration is available year-round, and the busiest period is July, just before the August 3 start.

Georgia and both districts typically require:

• Proof of age, such as a birth certificate
• Proof of residency in the district’s attendance area, such as a lease, mortgage statement, or utility bill
• A Georgia Certificate of Immunization (Form 3231)
• A Georgia vision, hearing, dental, and nutrition screening certificate (Form 3300) for entering students, where applicable
• Records from a prior school

Because students are assigned by attendance zone, confirm your address with the right district before you buy or rent a home. Supply lists are posted by individual schools, often in July, and open houses or meet-the-teacher events take place in the days before school opens.

Special Programs and Their Calendar Implications

Most programs follow the standard calendar of the district that runs them. Both districts offer career and technical pathways, specialty programs, alternative education options, and virtual learning, and the schedules for these can differ in bell times, transportation, and application deadlines. Families should ask the school or program office. High school students taking dual enrollment courses at Kennesaw State University, Chattahoochee Technical College, or other colleges should keep two calendars in view, because college semesters start and end on different dates than the district’s.

Georgia’s lottery-funded Pre-K program is typically run by providers with their own calendars, so Pre-K families should confirm dates directly. There are no widespread year-round schools in either district.

Athletics and Extracurricular Calendar Context

High school athletics in Georgia are governed by the Georgia High School Association (GHSA), which sets season dates, eligibility rules, and playoff schedules. Cobb and Marietta teams compete across many sports, and Friday night football is a major event. Football and volleyball begin around the August opening, with playoffs running into November. Basketball spans the winter holidays and the February break, and spring sports finish around exams in May. Practices and games sometimes continue during fall and winter breaks, so athletes should check their school’s athletic page.

State-Level Calendar Requirements and How Georgia Law Governs Cobb County

The Georgia Department of Education sets the framework for the school year, including the 180-day or equivalent-hours minimum for instruction and the state testing windows. Within that framework, the Cobb County Board of Education and the Marietta Board of Education each decide their start dates, break placement, professional learning days, and the use of digital learning days. That local flexibility explains why Cobb opens on August 3 and Marietta on August 4, why they have different last days, and why both take a full week off in February. Georgia also gives districts options to address instructional time lost to emergencies, and each board applies them as needed.

Frequently Asked Questions

When does school start in Cobb County, Georgia?
For 2026-27, students in the Cobb County School District return on Monday, August 3, 2026. Marietta City Schools opens on August 4.

When does school get out for summer in Cobb County?
The last day for CCSD is May 19, 2027. Marietta City Schools finishes on May 26, 2027.

How many days are in a school year in Cobb County?
CCSD’s 2026-27 calendar shows 176 student instructional days, which meets Georgia’s standard through its hours-based option. Marietta’s calendar is organized differently, so check its calendar.

How do I find out if school is cancelled today in Cobb County?
Watch for your district’s automated call, text, or email, check the district website and social media, or follow WSB-TV, 11Alive, FOX 5 Atlanta, or the Marietta Daily Journal.

What is the spring break schedule for Cobb County schools?
Spring break for CCSD is April 5-9, 2027, and Marietta City Schools uses the same week. Both districts also have a fall break and a February break.

How do I enroll my child in Cobb County schools?
Use the online enrollment process for the district that serves your address, and provide proof of age, residency, and immunization records. Your zoned school’s front office can help.

Are there any year-round schools in Cobb County?
No. Both districts run traditional August-to-May calendars.

Who do I contact about school calendar questions in Cobb County?
Start with your child’s school office, then contact the Cobb County School District central office in Marietta, or Marietta City Schools if you live in the city.