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999 West Dundee Road
Wheeling, Illinois 60090

Phone: 847-537-8270

Superintendent: Dr. Michael Connolly

School Board & Administration


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CCSD21 is a school district comprised of 13 schools across 6 different communities in the northwest suburbs of Chicago.

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School District 21 prides itself on its Professional Learning Community and its rich tradition of professional collaboration, high levels of professional development, and family-like atmosphere. If you see the opportunity to work with colleagues in making a difference in the lives of students and families in a truly diverse setting, School District 21 seeks your application.

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Windows Updates

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Like our students with their Chromebooks, staff members are responsible for completing updates on their staff laptops when those updates are available.

Updates on Windows staff laptops will prepare themselves in the background and will finish processing on either a shut down or a restart as pictured below.

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Typically, this is also how a staff member will know that such updates are ready.

Unfortunately, unlike Chrome OS–which normally updates in about 10-20 seconds, Windows updates can range from 2 minutes to 20 minutes depending on the scale and size of such updates. During this time, the computer should be plugged in and must stay in. Updates should never be interrupted.

As a result, it is recommended that staff members update their computers at a time when they are not going to need to rush off to somewhere new with their laptop. (For example, if you need to leave school at a specific time for another commitment at the end of the day, that is not a good time to select the “Update and shut down” option as those updates may last for 10 or 20 minutes.)

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Topic: Tech Tips



Each District 21 school is named after an American author, and learning and literacy is at the center of our Professional Learning Community. The Modern Pen provides a collaborative location in which District 21 teachers can come together to learn the skills that will enable their students to learn new skills and to understand concepts at an even different level than before.

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