Each i21 classroom is outfitted with an advanced audio/video system.
![Classroom Classroom](https://cdnsm5-ss18.sharpschool.com/UserFiles/Servers/Server_27969467/Image/Self Help/Self Help Bringing Solutions Closer to You/i21 Interactive Classroom/Technology Tools/Audio and Video System/Redmike_Teacher_Student.jpg)
The audio system is comprised of an amplifier, two wireless microphones (one for the teacher and one for students to share), and four speakers. Research indicates that the use of such equipment results in improved student academic performance as well as a reduction in teacher vocal stress (Some classrooms that have existing audio systems installed may not receive a new audio system with i21 per the Proposition S guidelines).
This equipment--along with a combination DVD/VCR player/recorder and HDTV tuner--is housed in a locking cabinet when not in use.
![Amplifier Amplifier](https://cdnsm5-ss18.sharpschool.com/UserFiles/Servers/Server_27969467/Image/Self Help/Self Help Bringing Solutions Closer to You/i21 Interactive Classroom/Technology Tools/Audio and Video System/amp.jpg)
![DVD DVD](https://cdnsm5-ss18.sharpschool.com/UserFiles/Servers/Server_27969467/Image/Self Help/Self Help Bringing Solutions Closer to You/i21 Interactive Classroom/Technology Tools/Audio and Video System/dvd.jpg)
The video components are rounded out with an advanced document camera that can also serve as either a digital still or video camera. Items "shot" with the document camera can then be projected onto the whiteboard.
![Cabinet Cabinet](https://cdnsm5-ss18.sharpschool.com/UserFiles/Servers/Server_27969467/Image/Self Help/Self Help Bringing Solutions Closer to You/i21 Interactive Classroom/Technology Tools/Audio and Video System/cabinet_table.jpg)