Vaccination Rates At Tredyffrin-Easttown Schools: See Newly Revealed Data

TREDYFFRIN, PA — State officials have released new data showing vaccination rates at schools across Pennsylvania, including all Tredyffrin-Easttown public schools. (See the data below.)

The Pennsylvania Health Department's new interactive table shows what percentage of students at different schools have been vaccinated against measles, polio and other diseases during the 2025-26 school year.

Previously, school vaccination rates were only publicly accessible at the state and county levels. Health officials say the public deserves as much accurate information as possible in the face of misinformation and conspiracy theories that have created mistrust in longstanding medical guidance, sparking a resurgence of diseases once considered eliminated.

"Knowledge is power, and Pennsylvania parents deserve clear, accessible data about the health of their children’s schools," State Health Secretary Dr. Debra Bogen said in a statement. "This new tool cuts through the noise, putting critical information directly into the hands of families and local leaders so they can work together to reduce the risk of vaccine-preventable diseases like measles and whooping cough."

Once declared eliminated in the United States, measles has resurged in recent years due to declining vaccination rates, according to health experts.

The outbreak has spread to Chester County, where 26 cases have been reported this year, including 15 in August.

When 95 percent of people in a community have received the measles, mumps, and rubella (MMR) vaccine, most people are protected through herd immunity, according to the CDC.

State health officials shared vaccination data for kindergarteners, seventh-graders and high school seniors from last school year. Enrollment figures also include home-schooled students who would otherwise attend that public school.

Here's what each listed vaccine means:

• DTaP: Diphtheria, Tetanus, acellular Pertussis (whooping cough) — given to babies and young children
• MMR: Measles, Mumps, Rubella
• Hep B: Hepatitis B
• Varicella: Chickenpox
• Tdap: Tetanus, Diphtheria, acellular Pertussis (whooping cough) — given to older children and adults
• MCV4: Meningococcal conjugate vaccine (MenACWY or MenABCWY)

The reported vaccination rates for the Tredyffrin-Easttown School District are listed below. All data was shared by the Pennsylvania Health Department.

Of Note

• All Tredyffrin-Easttown schools had MMR vaccination rates above 95 percent, indicating strong community protection known as herd immunity.
• Community members can still be infected when herd immunity is achieved, since none of the listed diseases have been eradicated. Vaccination is still the most effective way to prevent infection, according to health experts.
• All kindergarten students at New Eagle Elementary received the listed vaccinations that are recommended for their age group.

Resources

• Pennsylvania school immunization rates, 2025-2026
• General immunization guidance from the PA Health Department
• School immunization requirements
• Facilities that vaccinate eligible children at no cost
• Age-appropriate immunization schedules for children 6 and under, and ages 7 through 18, as recommended by the American Academy of Pediatrics