The company should be a certified IT outfit. The best will always come recommended. The best company will have a portfolio that speaks for itself. You do not want to go on trial and error on this one. The quality of sound and picture you get is totally dependent on the experience of the company doing the installation for you. They should be well able to deal with a wide range of equipment no matter the complexity of the installation.
They should have proper customer support. This is crucial because you will need to walk with them through what you need. A company with good customer care will understand the needs of its customers. It is crucial for the company you are engaging to get exactly what you need for the effectiveness of communication.
They should also have proper installation equipment. A company that has investment in installation equipment is more preferable. In the case of an IT room offering online schooling, a good network will need the right equipment. The size of the screens and the bandwidth needed should not be a problem. Audio visual components that use the internet need fluid internet with sufficient bandwidth so as to avoid breaking and hanging.
The company should also come with a good warranty and service support policies. There are instances where installations will develop complications within a short period of time. It is crucial that the company be in a position to repair any damage or repair any problem within a certain period of time. Go for the best after sale service perks as opposed to hit and run companies. The best companies will want to see the success of your communication setup over the long haul for the sake of reputation.