Complex sentence: Island High follows the same calendar as the rest of the Alameda Unified School District, however, instead of splitting the year into four nine-week-long Quarters like a traditional high school, Island splits their year into six Hexemesters, each six weeks long.
Split into simpler sentences: Island High follows the same calendar as the rest of the Alameda Unified School District. However, instead of splitting the year into four nine-week-long quarters like a traditional high school, Island splits its year into six hexemesters, each six weeks long.