multiple mic mixing console good for 20 to 60 mic I/O

I want to have a full electronics circuit design for the use of our speech laboratory. I need a switch for my students microphone ranging from 20 to 60 students in a class. the system must have a database where teacher will enter student's attendance, class record and score as well as store audio files during class recitations. I want to have a voice waveform comparison technology installed so that teachers could evaluate students' pronunciation by comparing a visual representation of the students voice waveform with that of the model speaker's voice waveform and have the file captured and stored in the students' database which would be available for playback. The system must have a one-to-one, grouping and broadcast functions or modes. It must have available options for audio and video sources and is able to mix audio and video. The system uses only one workstation for the teacher and the students shall only be provided with headsets in their respective cubicles or booths. lesson-on video will just be projected on to the screen using projector If possible the system should have a pre-loaded American English language lesson with text, graphics, audio and video.