The Connecticut Interscholastic Athletic Conference made the announcement Friday, saying the decision is in line with public health recommendations.
Just last week, the conference said full-contact practices -- including football -- could begin September 21.
Related: NJ high school athletes prepare for fall sports season amid COVID-19 pandemic
Other lower-risk sports will be allowed to continue.
"The CIAC is obligated to provide its student-athletes, coaches, administrators, and superintendents with a clear direction on football activities that aligns with (Department of Public Health) recommendations," the CIAC wrote regarding its meeting Thursday night. "Without DPH support, the CIAC cannot move forward with a full contact season, as it would place superintendents and boards of education in the impossible position of acting against the recommendation of a state agency. As such, the CIAC Board of Control, in alignment with DPH recommendations, has determined that high risk full contact football is no longer a viable option."
Related: Dozens protest Nassau County decision to postpone high school fall sports
The conference said it would work with athletic directors, coaches, and medical experts to provide football players with meaningful low to moderate risk fall activities.
MORE NEWS: Moving companies turn customers away as people leave Tri-State in record numbers
Who moved where during COVID-19?
RELATED: New York, New Jersey, Connecticut out-of-state travelers quarantine list
MORE CORONAVIRUS COVID-19 COVERAGE
Back to school information
How coronavirus changed the New York region
Do you have coronavirus symptoms?
What's Open, What's Closed in the Tri-State area
COVID-19 Help, Information. Stimulus and Business Updates
UPDATES
New York City
New Jersey
Long Island
Westchester and Hudson Valley
Connecticut
abc7NY Phase Tracker: