One of a series of instructional packets to aid schools in reducing sex stereotypes, this inservice guide for use with school personnel is designed to stimulate thought and discussion about sex differences. Focus is on the difference between real sex differences and cultural sex stereotypes, the origin of the latter, and the implications of sex equality for our changing society and particularly for our system of public education. Contents include a leader's script (material to be presented), four transparency masters, and three handout masters. Topics covered include biological sex differences, intellectual sex differences (childhood and adolescence), myth and reality, intellectual and personality sex differences, and adjectives for son and daughter. A checklist of teacher responses to specific classroom situations is also included. The packet is designed for use alone, in combination with other packets (see Note), or to supplement existing inservice units. (JT)