The purpose of the study was to develop and evaluate a comprehensive first semester college jazz improvisation curriculum. Specific problems concerning the evaluation of the curriculum were, (a) to assess achievement in music theory fundamentals, (b) to assess achievement in jazz listening, (c) to assess improvement in jazz improvisation performance, (d) to assess student attitudes toward jazz improvisation and the curriculum. Based on the findings, the conclusions were as follows students benefited from the study of jazz improvisation, utilizing the developed curriculum, in the areas of, (1) knowledge of music fundamentals, namely, chord spelling, scale spelling and harmonic analysis; (2) identification of jazz tunes, composers, musical forms and prominent jazz performers; (3) improvisation performance in a jazz style, and (4) positive attitude toward improvement in jazz improvisation.