Pity they don’t pay the teachers on the same basis: the Baltimore public school system, for which IBM is installing PS/2s in about a third of the elementary schools and training about 300 teachers and administrators to use its Writing to Read program, will pay $2.9m for the machines only if test scores in the summer of 1991 improve by a pre-set level, otherwise IBM gets its equipment back and is paid only a minimal sum for preparing the classrooms for computer networks – and whose idea was it? Desperate to break the stranglehold on the US schools market held by Apple Computer Inc, IBM suggested it itself.