The San Diego County Inventory of Reading Attitude was developed as part of a reading study project in 1959-60 comparing three approaches to reading instruction. The 114 items on the original instrument were item analyzed, and the 25 most discriminating items are included in the revised form. Data for standardization are presented for 381 primary-grade students and for 376 intermediate-grade students in San Diego, California. Tables report the norms as expressed in stanines. Teacher judgment of reading attitudes of the three students with poorest reading attitudes and the three students with best reading attitudes in each classroom are compared with inventory scores. The difference between the two groups was found to be significant well beyond the 1 percent level of confidence when independent teacher judgment of reading attitude was used as the validity criterion. Uses of the inventory discussed include group counseling, individual counseling, classroom research, inservice education, and parental conferencing. A copy of the inventory and an answer key are included. (CM)