Why Is Measurement Important?

Absenteeism among students and staff due to illness is staggering — kids miss 22 million schooldays a year due to the common cold and 38 million days due to influenza.

Teacher absences cost $25 billion annually, and the bill for substitute teachers in the U.S. is $4 billion each year.

Chronic absenteeism is a persistent problem and has a major impact on academic success. By improving cleaning practices and establishing a standard to measure cleanliness, student and staff health is protected, academic performance increases and schools help their bottom line.

Typical cleaning practices that rely on visual inspection are not effective in measuring cleanliness. Cold and flu viruses can live on surfaces anywhere from a few seconds to 48 hours, and some bacterial can live on surfaces for months. Germs abound on water fountains, cafeteria trays, water faucets, keyboards and toilet seats and are transmitted by touch.

The ISSA Clean Standard: K-12 helps schools objectively assess the effectiveness of their cleaning processes, contributing to the quality of the indoor environment.

Based on the philosophy of “Clean, Measure, Monitor” and an emphasis on high-performance cleaning, the standard focuses on:

  • The desired levels of cleanliness
  • Recommended monitoring and inspection procedures to measure effectiveness
  • How to use the measurement and inspection results to assess and improve cleaning processes and products.

The ultimate goal is to ensure that schools are in a condition that is clean, safe and healthy. More importantly, the ISSA Clean Standard calls for corrective actions in the event the school is not achieving the desired level of cleaning effectiveness. To learn more, go to issa.com/cleanstandard.

This article originally appeared in the issue of .

About the Author

Bill Balek is the director of Legislative and Environmental Services at ISSA where he oversees the association’s legislative, regulatory and environmental programs. He has over 30 years of experience in the cleaning industry. Balek is an attorney licensed to practice in Illinois, and holds an MBA in marketing from DePaul University Kellstadt Graduate School of Business. For more tips and information, visit issa.com/infectionprevention.

Featured

  • Philadelphia Middle School Facility Earns LEED Gold Certification

    The Alternative Middle Years (AMY) at James Martin Middle School in Philadelphia, Penn., recently received a LEED Gold certification from the U.S. Green Building Council, according to a news release. The School District of Pennsylvania partnered with KSS Architects on the project.

  • Can AI Help Build Stronger Communities in Student Housing?

    Student housing success is shifting from operational performance to student experience, with belonging now at the center. A recent 2025 report underscores a growing emphasis on student well-being, community, and engagement, signaling that expectations now extend beyond logistics to ensure students feel supported in their living environments. AI is enabling that shift by reducing administrative workload and giving teams more time to focus on meaningful student engagement.

  • University of Kansas Breaks Ground on Entrepreneurship Hub

    The University of Kansas in Lawrence, Kan., recently held a groundbreaking ceremony for the new KU Entrepreneurship Hub, according to university news. The Hub is part of the university’s School of Business and will include spaces for experiential learning and programming.

  • USC Launches Major AI Initiative After $200M Gift

    The University of Southern California in Los Angeles, Calif., recently announced that it has launched a “transformational” new AI initiative thanks to a $200M gift, according to a news release. The project will leverage AI toward breakthroughs and innovations in subjects like the health sciences, business, security, and the arts.