Keep kids in school. Keep Covid out.

Because school is important and
everybody’s health is connected.

Find Out How

Testing Across America

Testing America May H Map
  • States with schools currently testing
  • States with schools planning testing programs
  • States with schools considering testing
  • Lab location


Labs in our network


Schools signed up to test


Students, teachers, and staff can be tested weekly by our labs

Pooled Testing is How We Test Every Student, Every Week

Pooling Lowers Costs to $6 per Student without Sacrificing Accuracy

Questions about pooled testing? Or how to run your school’s testing program? We’re here to help.

Learn More

We know navigating COVID-19 testing can be overwhelming. Visit our page for parents and guardians to learn more about how pooled testing can help protect your school community.

Learn More

Empowering School Communities

Empowering School Communities May Graph

Days of In-Person Learning = Number of Swabs x 5 Days
Pooled testing occurs weekly, representing 5 school days that are covered by each test. Each swab represents one person (student, teacher, or support staff) who has been tested as part of a pool.


Noses swabbed since Jan 2021

“Having a negative test is a morale booster.

People walk taller and feel more secure. It lifted the fear.”

-School Superintendent

So Easy a Kindergartener Can Do It

Testing Designed for K-12 Schools

Concentric is on a mission to bring students and teachers back to school with peace of mind.

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'Boogers down': Biden’s bid to reopen schools may hinge on ‘pooled’ testing

Ginkgo has partnered with school districts in Massachusetts and Maryland to administer hundreds of thousands of PCR tests per week, at a cost of about $6 per student.

Pooled COVID-19 testing can help keep kids in school

Boston Globe

View Article

WRAL Investigates: School COVID testing challenges in fall

What is pooled testing for COVID-19 and how can it help fight the virus

Here’s what pooled testing is and how it can be used for the coronavirus

Safer reopening will require millions more Covid-19 tests per day. One solution: ‘pool testing’

How It Works

Testing as Simple as A-B-C, 1-2-3

Concentric’s goal is to provide easy, affordable pooled testing for every school in America. Classroom pooling brings the cost of testing down to as low as $6/student.


Students Self-Swab

Our test uses short, easy-to-use swabs, not the invasive brain ticklers. We like to say, “if you can pick your nose, you can take this test!”


Send Us Your Samples

Each classroom combines its swabs into one tube. We provide shipping materials to send samples to our lab, where we run one test per classroom.


Get Results

If the result is negative, it’s unlikely anyone is infected. If the result is positive, someone in the classroom is most likely sick; then schools can decide next steps to stop or prevent outbreaks.


Get Back to Learning

Our quick and easy process takes just minutes to perform, allowing students and teachers to focus on learning. All that knowledge for the price of one test.

Set up pooled testing at your school today by answering a few quick questions.

Get Started
Our Service
  • How long does classroom testing take?

    Testing an entire classroom usually takes about 10-15 minutes and speeds up after the first day. The students become pros at swabbing their nose.

  • What grade levels can perform their own swabs?

    In our experience, not only can kindergarteners perform their own swabs, they often do the best of all the grades. Our test can be used by any grade, K through 12.

  • How do I sign up?

    Click here to get started! You can schedule time with our team to discuss your school’s options.

  • How do I run a school testing program?

    We’re here for you! The first thing we do with new customers is provide them with comprehensive instructions explaining how to set up and run a testing program. We provide you with all the information you need to make sure everything runs smoothly. As of August 2021, we’ve provided our pooled testing service to over 1,000 schools; we’ve learned a lot about what schools need and are constantly improving our service to better serve you.

  • Why should we pool samples instead of testing individually?

    Pooling covers many people with just one test; this dramatically reduces the cost of testing without sacrificing accuracy, saving your school’s resources. Pooling can also take less coordination, effort, and time from schools, and we’d rather schools use their time with students to educate and enrich them.

    If the pooled test result is negative, it’s unlikely anyone is infected and students continue learning uninterrupted. If the pool result is positive, someone in the classroom is most likely sick; you can then follow up to stop an outbreak—for just the cost, time, and effort of one test.

    When a positive pooled test result occurs, a pod can use diagnostic tests to help confirm who is sick. The decision to do this follow-up testing is up to each school. A common next step is to provide individual testing for students in the positive pool.


  • How does classroom pooling work?

    All students in a class, pod, or cohort swab their own noses and place their samples in a single tube (that’s the pooling step). The samples in that tube are then run as a single sample, using one test. See it in action here.

    If students have trouble performing the swabbing, schools can provide a nurse or other trained staff member to help. However, the test is so easy that kindergarteners typically can do it with no issues.

  • How often should schools test?

    The CDC recommends that schools use layered prevention strategies—including testing—to support full-time in-person learning. The CDC also recommends testing at least once per week when using testing programs like our pooled service. However, they suggest considering testing more than once per week in areas with higher rates of community spread. School communities should develop a testing strategy—including the frequency of testing—to meet their community’s needs. (CDC guidance as of August 2021)

  • Why should we test for COVID-19 in schools?

    You know the old saying: “knowledge is power.” Tools like pooled testing empower you to make great decisions. Without knowing the specific prevalence of COVID-19 in your classrooms, it’s tough to make informed decisions about safeguarding your community, returning to school, or continuing in-person learning.

Our Tests
  • Are pooled test results reported to public health authorities?

    No. Since pooled tests do not provide results for individuals, the results are not reported to public health authorities. We only share the results of pooled tests with the individuals that you tell us to.

  • Why isn’t your pooled test FDA authorized?

    One of our pooled tests combines swabs from 5 to 25 people. There are different regulations for tests that provide individual results and tests that provide “population-level” results—that is, results for groups of people. Tests that do not give individual results, like our pooled test, do not require FDA authorization. For more information on how different types of tests are regulated, visit this CDC webpage to learn more.

  • How many samples are included in each pool?

    Each pool consists of samples from 5 to 25 people.

  • How accurate is Concentric’s test?

    Molecular tests, which detect the genetic code of the virus, are typically highly accurate at detecting the virus that causes COVID-19. Click here to read our validation reports for our lab at Ginkgo and our partner labs across the country. Fair warning: the information is a bit dense!

  • How long are the swabs?

    Our pooled test uses short nasal swabs that go just a half inch into the nostril; think: cotton swabs. We do not use the long “brain tickler” swabs for our pooled test. We like to say, “if you can pick your nose, you can take this test!”

  • What types of tests do you offer?

    We offer a pooled test that can test 25 people using one test. Our pooled test works by detecting the genetic code of the virus that causes COVID-19. These tests are sometimes known as “molecular tests” or “PCR tests.” 

    For individual diagnostic testing, we offer rapid antigen and PCR tests. Both of these types of tests can be used as a follow up to pooled testing, to help pinpoint infections.



Want more in-depth information?

Read our white paper on classroom pooling.

Download the Whitepaper

From Our Blog

Our Plan To Provide Simple, Affordable Testing to Every School in America

Pooled testing dramatically lowers costs without sacrificing accuracy

December 22 2020
The Ripple Effect of COVID-19 Testing

Protecting Schools, Workplaces, and Entire Communities

December 02 2020
Types of Testing

The language of testing, what it means, and what each option can offer you

November 10 2020