The present study explored whether (a) positive or negative reinforcement would produce higher percentages of on-task student behavior at set timed intervals, (b) positive, negative, or total reinforcement would increase student attentiveness after reinforcement, and (c) if natural fluctuations in teacher approval/disapproval would have any bearing on percentages of student attentiveness. Findings of the 15-day study concluded that (a) positive reinforcement maintained significantly higher levels of student attentiveness over negative reinforcement, (b) negative reinforcement did not significantly lower percentages of student attentiveness, and (c) natural fluctuations in rates of teacher approval/disapproval had no apparent effect on the amount of on-task behavior in the beginning strings class.