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How many interveners are there in the U.S.?
Interveners and Qualified Personnel
During one of the roundtable sessions held at the deaf-blind projects' meeting in Washington, DC in July, a question came up about how many interveners there are in the U.S. There isn't really a solid data-based answer (and it depends on how you define "intervener"), but NCDB did ask a question about this on a 2012 survey of state deaf-blind projects. I've posted a table in the "Group Materials" section from the survey. Of the 42 states that responded, 9 reported that they did not know the number. Another 7 indicated that no children had interveners. The total number of children reported to have interveners in the remaining 26 states was 391. The definition of "intervener" was left up to each survey respondent.