Middle grades are a critical time for capturing the interest and imagination and developing the potential of mathematically promising students. This is a time for students to make sense of mathematics, build a solid foundation and enthusiasm, and set the course for the highest levels of mathematics in the future. This is a time to explore their mathematical MP3: mathematical promise, passion, and perseverance. Helping students chart the best course for mathematical development is not an easy task. As students move from elementary to middle school to high school, there is a need for a seamless articulation of the mathematics program. Some schools offer middle grades students a variety of options while others require all students to take the same mathematics courses according to their grade level. This article offers a number of questions for discussion with middle grades' student and counselors, administrators, and mathematics teachers to help determine the best fit and greatest support for maximizing MP3.