Unfortunately, no one knows exactly what causes Crohn's, just that something in your body causes your immune system to overreact. Various stimuli may trigger Crohn's disease, affecting individuals differently. For instance, it might be a kind of bacteria, something in your own intestines, or even your family history.
ACCUPLACERÂ® is a suite of computerized tests that determines your knowledge in math, reading and writing as you prepare to enroll in college-level courses.
1 ACCUPLACER math tests taken before August 25, 2014 will still be valid for two years from date of testing. 2  Placement in college level math courses will continue to use Accuplacer.  If you want to challenge your developmental math placement you can take the Math Mastery Exam.