They wouldn't be very useful in education unless you could populate them with difficult to obtain chips. It is essentially the schematic in PCB form. Depending

They wouldn't be very useful in education unless you could populate them with difficult to obtain chips. It is essentially the schematic in PCB form. Depending upon what they included in the silkscreen, it would be even less than a schematic (e.g. you would not know the specifics of each component). The education market would also expect some accompanying materials, such as the theory of operation and datasheets that are under copyright (assuming they haven't been lost to time).