As Montgomery County grapples with a whooping cough outbreak, health officials are offering free immunizations to seventh grade students this week, part of a continuing effort to get students in line with new state requirements.

Students who do not show documentation of immunizations before a Friday deadline could be excluded from school starting Monday, officials said.

The vaccinations, offered by the county’s Department of Health and Human Services, are open to any student in grade 7 who still needs a Tdap or meningococcal vaccine.

On Sept. 9, 10, and 11, clinics offering vaccinations will be held from 3 p.m. to 7 p.m. at nine schools. Here’s the schedule:

Tuesday, Sept. 9

- Roberto Clemente Middle School, 18808 Waring Station Road, Germantown

- Eastern Middle School, 300 University Blvd. East, Silver Spring

- Julius West Middle School, 651 Great Falls Road, Rockville

Wednesday, Sept. 10

- Briggs Chaney Middle School, 1901 Rainbow Drive, Silver Spring

- Forest Oak Middle School, 651 Saybrooke Oaks Blvd., Gaithersburg

- Parkland Middle School, 4610 West Frankfort Drive, Rockville

Thursday, Sept. 11

- Benjamin Banneker Middle School, 14800 Perrywood Road, Burtonsville

- Rocky Hill Middle School, 22401 Brick Haven Way, Clarksburg

- Silver Spring International Middle School, 313 Wayne Avenue, Silver Spring

Officials say that appointments are required and can be made by calling 311 or visiting the DHHS Web site: http://www2.montgomerycountymd.gov/VaccineClinic/