We review the debate over behavior, gender and classroom placement in ability groups for kindergartners. Using vignettes we vary children's gender in three ways; male, female, or unspecified gender and also describe them as behaving well, average, or misbehaving. Our aim is to probe how much gender and behavior matter with respect to mock reading group placement. The design allows us to see if depicted behavior affects placement when every vignette child is described as possessing the same, average ability. After reading vignettes that vary gender and behavior, but not ability, respondents are directed to assign the portrayed child to a high, medium or low reading group. While depicted behavior strongly affects reading group placement, gender is not a significant predictor.