JUNTOS is an introductory Spanish program based on the principle of backward design. Project-based assessment tasks -- specifically created to measure identified course competencies for each unit -- drive the classroom activities and online homework that prepare students to complete the assessment tasks successfully. These projects occur at the end of each two-chapter unit, providing a more holistic approach to proficiency assessment. Each unit has a clear learning path that guides students through both the online and face-to-face content. To achieve proficiency, students complete online work in preparation for class, participate in collaborative activities in class, and then complete project-based assessment tasks to demonstrate their skills and knowledge.