I don't know about you, but a classroom like this seems like it will lead to a very different education for future generations of students.
Can we abandon the traditional A-F grading system for more of a standards based report card? What about having students stay with the same teacher for more that one year? Letting that student/teacher relationship develop further and progressing those students able to work ahead to the next grade level or having more time to master concepts without the rush the "end" of the school year and moving to the next grade level and new teacher.
I see students that are ready to move on and excel in their learning really benefiting from this style of classroom. Could we end up seeing those students graduating high school at age 15 or 16 or the very least graduating with dual college credits? What about those students who struggle with some concepts. If they need more time and learn at their own pace, will it be accepted if they don't graduate until age 19 or 20?