Question: Is there a set time frame that schools should be closed for?

Answer passage (source: CDC):
page_title: K-12 Schools and Child Care Programs
section_headers: Dismissals
When should I dismiss our school/child care program?
section_content: Any decision about school dismissal or cancellation of school events should be
made in coordination with your local health officials. Schools are not
expected to make decisions about dismissals on their own.
You may need to temporarily dismiss school for 2-5 days, if a student or staff
member attended school before being confirmed as having COVID-19. This initial
short-term dismissal allows time for the local health officials to gain a
better understanding of the COVID-19 situation impacting the school and for
custodial staff to clean and disinfect the affected facilities. Work with the
local health officials to determine appropriate next steps, including whether
an extended dismissal duration is needed to stop or slow further spread of
COVID-19.
If there is substantial transmission in the local community, local health
officials may suggest extended school dismissalspdf iconpdf
icon (e.g., dismissals for longer than two weeks). This longer-
term, and likely broader-reaching, dismissal strategy is intended to slow
transmission rates of COVID-19 in the community.

Reviewer feedback on this answer:
It directly answers questions regarding school closings and time frames.
This answer mentions how long to close depending on the severity of local spread, and gives a link to more information about how to decide how long to close for.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: CDC):
page_title: Frequently Asked Questions
section_headers: In Case of an Outbreak in Your Community
Will schools be dismissed if there is an outbreak in my community?
section_content: Depending on the situation, public health officials may recommend community
actions to reduce exposures to COVID-19, such as school dismissals. Read or
watch local media sources that report school dismissals or and watch for
communication from your child’s school. If schools are dismissed temporarily,
discourage students and staff from gathering or socializing anywhere, like at
a friend’s house, a favorite restaurant, or the local shopping mall.

Reviewer feedback on this answer:
Not as thorough as the other two, but still on topic.
This just tells you that you should consider closing schools if necessary, but doesn't answer the question about how long you should plan to close.

Reviewer ratings:
Acceptable
Bad

Answer passage (source: CDC):
page_title: Institutes of Higher Education
section_headers: Dismissals
How long should colleges or universities be dismissed?
section_content: It depends on the situation at your school and community. You may need to
temporarily dismiss school for 2-5 days, if someone with COVID-19 was on
campus. This initial short-term dismissal allows time for the local health
officials to gain a better understanding of the COVID-19 situation impacting
the school and for custodial staff to clean and disinfect the affected
facilities. The need for an extended dismissal will be made based on what
officials discover from contact tracing.
If there is substantial transmission in the local community, local health
officials may suggest extended school dismissals. This longer-term, and likely
broader-reaching, dismissal strategy is intended to slow transmission rates of
COVID-19 in the community.

Reviewer feedback on this answer:
It directly answers questions regarding school closings and time frames.
This answer says to initially close for a few days if there is a confirmed case, and says that you may need to close for longer, but does not specify how long the extended closure should be.

Reviewer ratings:
Excellent
Could be Improved