This article examines the effectiveness of incentives in improving survey response rates of school counselors and compares the findings with those of previously researched populations. A $1 cash incentive increased response rates for a one-wave mailing of a questionnaire, while a raffle opportunity did not. The number and length of optional comments did not differ by incentive condition. These results are viewed in the context of theoretical perspectives for understanding mailed questionnaire response decisions. (Contains 1 figure.)