There is now a complete curriculum and you can assign "Nuggets" for each song to students for homework, then monitor their progress. It does not let them progress until they have achieved 100% on the assignments. Easy grading and differentiation! Speaking of differentiation, the website also allows you to set not only the class proficiency levels, but you can adjust the proficiency levels of individual students so the tasks meet their abilities. The only downside to all of this is that I'll have to re-think a few of my original lesson plan ideas as they were based on the supplementary packets and many of the same activities are now in the "Nuggets". However, that also means I can reserve my class time for the higher-order thinking activities, such as Movie Talk, writing and speaking activities, and more organic language as students get the basics down from doing their homework.
I cannot recommend this website highly enough - it forms the backbone of my curriculum (more to come on that soon), and this just made everything even easier, more interactive, more focused on comprehensible input, and overall more exceptional than ever. Thank you Señor Wooly!