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999 West Dundee Road
Wheeling, Illinois 60090

Phone: 847-537-8270

Hours: 8AM – 4PM

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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HDMI-VGA Adapters

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Both student Chromebooks and staff members’ Lenovo ThinkPad Yoga 11e laptops are equipped with full-size HDMI ports for displaying video on other displays.

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While HDMI has become a standard for high definition video, classroom projectors in School District 21 are set-up for more traditional VGA connections. As a result, students and staff members do need to continue to utilize adapters to connect their computers to the VGA cables. Below are the steps for connecting to the projector using a new HDMI-VGA adapter.

Step 1-Do not connect through the document camera

If you are utilizing a document camera, do not connect to the projector through the document camera. Rather, connect the VGA cable directly from the wall to the adapter and computer.

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Step 2: Turn on the projector

Everything seems to work better if you turn the projector on next.projector1b

Step 3: Connect the VGA cable & the adapter and plug in

Connect the HDMI-VGA adapter to the VGA cable. Try to tighten the locking screws about equally if possible. Then, plug the HDMI plug into the HDMI port on the right side of the computer.

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Step 4: Plug audio cable in, if necessary

If you are using speakers, plug the audio cable in directly to the 3.5mm audio port on the left side of the computer.

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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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