Many ingredients that you need to progress to the advanced level aren't easily obtainable.
At the advanced level, 33% of leavers complete the full framework and 43% an NVQ three.
Meanwhile the advanced level, it's said, is really just a finishing school for students who have come from all over.
Many of the school's students, often from other parts of America, join only at the advanced level.
The advanced level of the research adds a layer of incomprehensibility to the already fitful conversation between parents and teenagers.
In the United States, only 7 percent of students reached the advanced level in eighth-grade math, while 48 percent of eighth graders in Singapore and 47 percent of eighth graders in South Korea reached the advanced level.
Nearly half of eighth graders scored at the advanced level in math in Taiwan, Korea and Singapore, compared with 6percentt of American students.
With 120 problems, Super Scribblenauts is arguably a little brief, although the advanced level means some need to be cracked an additional three times with different answers.
The performance of American schools drops year after year, with only 6% of US students scoring at the advanced level in international tests.
In Montana, 41 percent of eighth graders scored at or above proficiency and 2 percent scored at the advanced level, higher proportions than any other state.
In science, students in the top-performing states fared somewhat better: 24 percent of students in Massachusetts achieved the advanced level, compared with 40 percent in Singapore.
