A comparison of the findings of an annual telephone survey of all 15,000 United States public school districts, which was conducted to update a computer database, with the results of the previous year's survey indicates that microcomputer use is growing very rapidly in schools. Since the first study, the number of schools using microcomputers has increased by over 60% and the number of districts by more than 40%; over 24,000 public schools now use microcomputers in instruction. While local funding availability and larger-size schools and districts are both factors that still identify schools most likely to have microcomputers, the smaller and less well-funded schools are catching up quickly, as shown by their much higher growth rates. It is noted that the change in Chapter II funding (block grants) is apparently benefiting the microcomputer industry. Data tables are included in the report. (LMM)