The materials reviewed for Fishtank Math AGA meet expectations for alignment to the CCSSM for high school. For focus and coherence, the series showed strengths in the following areas: attending to the full intent of the mathematical content contained in the standards, spending the majority of time on the content from CCSSM widely applicable as prerequisites, requiring students to engage in mathematics at a level of sophistication appropriate to high school, being mathematically coherent and making meaningful connections in a single course and throughout the series, and explicitly identifying and building on knowledge from Grades 6-8 to the high school standards. In Gateway 2, for rigor, the series showed strengths in the following areas: supporting the intentional development of students' conceptual understanding, opportunities for students to develop procedural skills, working with applications, and displaying a balance among the three aspects of rigor. The materials intentionally develop all of the eight mathematical practices, but do not explicitly identify them in the context of individual lessons. In Gateway 3, the materials do not meet expectations for Usability as they partially meet expectations for Teacher Supports (Criterion 1), do not meet expectations for Assessment (Criterion 2), and do not meet expectations for Student Supports (Criterion 3).