Purpose: To examine the effects of the Situated Game Teaching through Set Plays (SGTSP) curricular model on secondary school students' soccer skills and game performance during a 10-lesson unit. Methods: A quasi-experimental design with/without a repeated measure was used to examine the effectiveness of the SGTSP model in comparison with a technique-focused approach. A convenient sample of 27 sixth graders from two classes participated in this study. Classes were randomly assigned to conditions. Data were collected from soccer skill tests and game performance coding instrument. Analysis of variance with or without a repeated measure was conducted to analyze the data. Results: Participants' ball controlling skill significantly improved for both groups over time. Their shooting and dribbling skills did not improve for both groups over time. No statistical differences were found in participants' changes in ball controlling, shooting, and dribbling skills over time between the two conditions. Participants in the SGTSP condition had better offensive off the ball, offensive with the ball, overall offensive decision making, and overall decision making than those in the comparison condition. Conclusions: The findings provided initial evidence supporting the effectiveness of the SGTSP model on developing students' decision making in the game plays. Participants taught by SGTSP had similar skill performance as those taught by a technique-focused approach.