I recently took a job at a school. This is only my second position as an IT professional. My only experience with corporate networks is in a large school district at another school. They used VLANs to separate traffic based on device type: VoIP, wireless APs, desktops etc. They had one domain with an extensive OU tree to manage AD, and all VLANs were bridged.
At my new position, the network is set up far differently. They use three different domains at each site to segregate each user and device type. One domain each for admin and teacher, classroom, and lab computers. Each domain gets a VLAN.
Is this a common implementation? I want to find out what the best practice would be, and if this can cause network performance issues.