25 students have the disease.
The Health Department spent the start of this week giving vaccinations to more than 100 students at both Tunstall High School and Tunstall Middle School.
The schools are beside one another.
There are only ten days left in the school year and nurses will monitor the chicken pox outbreak until then.
Last week nearly two dozen students reported the sickness within three days, the highest number of cases at one time at Tunstall.