Southwark went virtual last week over concerns that dust and debris found in the attic contained asbestos.
Crews began sealing off the attic out of an abundance of caution.
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Sunday, the School District of Philadelphia reported some good news, saying that air samples did not detect any airborne asbestos fibers.
However, as work continues at the school, kindergarten through 5th grade will attend class at South Philadelphia High School. Grades 6th through 8th will attend George W. Childs School.
Southwark students will use the second and third floors of the South Philadelphia High School.
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Breakfast and lunch will be served at both schools for Southwark students, officials said.
For children who will begin attending the high school, no adjustments will need to be made for transportation due to the close proximity of the schools.
For students who will attend George W. Childs, a shuttle bus will be provided from the high school, officials said last week.
It is unclear at this time when students will be able to return to Southwark, but officials said they anticipate the relocation to last several weeks.