From my understanding, Unit 6 Needs 7-8 Weeks, not 4 Weeks to Satisfy College Board Requirements. Here is why:
Teacher must provide full 60-minute hours (8 for Explore, 12 for Create), so, assuming a typical class is 50 minutes, 4 days a week, and 40 minutes 1 day a week (it is so in Chicago Public Schools, not sure about elsewhere) we have 4 hours per week.
So Explore needs a full 2 weeks, and create needs a full 3 weeks. If you add at least 1 week for preparation to each (a minimum of 2 weeks), then you must allocate a full 7 weeks (if not 8, to account for any missing days) for unit 6.
That is 8 weeks, and not 4 weeks, which throws off the syllabus.