One important role for the Wurlitzer piano was as a student instrument in schools and colleges, and non-portable console versions were made for this purpose. The teacher had a headphone and microphone to be able to listen into each student individually and talk to them without others hearing. All students listened to each of their instruments through headphones. Up to 48 individual student instruments could be connected together. According to former Wurlitzer employee Bill Fuller, 75% of all universities used Wurlitzer piano labs in the late 1960s or early 1970s, and some facilities were still in operation as late as 2000.