FRISCO, Texas (CBSDFW.COM) – Three people at Frisco High School have tested positive for COVID-19.

Frisco ISD leaders said Thursday the district learned of all three cases in the last 24 hours.

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The school district said it immediately began contact tracing and notified everyone who came into close contact with those who tested positive.

A staff member also tested positive this week at Wakeland High School in Frisco.

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The school district said a small number of students and staff are in quarantine.

Frisco ISD went back to school last week.

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