Voice reinforcement is the use of microphones by teachers to enhance learning in the classroom. The emerging technology is Infrared microphones since VHF ones can cause interference problems between themselves and with other equipment. The problem is in finding microphones that are unobtrusive but still can be used all day long. Also since many schools already have amplifiers for their whiteboard systems the lowest cost option is a microphone and receiver that connects into that system (or used with an additional amplifier)

We've worked on such a solution and very pleased with the results. We think this will be the up and coming technology for schools in the UK and Europe (it's already taken off in the USA)