This document reports the results of the Kansas Assessment Program for reading and mathematics for 1999. The mathematics assessment is given in grades 4, 7, and 10. Over 30% of the 4th graders met the individual student standard for excellence in mathematics, with 8% of 7th graders and only 4% of 10th graders meeting the standard. Five-year trend data show sizable gains on all three subscales and the total power score in mathematics at grade 4, with more modest gains at grades 7 and 10. In reading, almost 39% of the grade 3 general education/gifted students taking the assessment met the individual student standard of excellence, and at grades 7 and 10, over 26% and 19% of students respectively met the standard of excellence. Data are presented in table form for the individual grades and different subgroups of students. Three appendixes contain building frequency distributions, a description of the assessments, and some example items. (Contains 46 tables.) (SLD)