Complex sentence: Sneeze is very smart and a great inventor but because he was so smart his parents want him to skip a grade with that in mind sneeze tried to bug his teachers until they say he is not mature for high school.
Split into simpler sentences: Sneeze is very smart and a great inventor but because he was so smart his parents want him to skip a grade. With that in mind, Sneeze tried to bug his teachers until they would say he is not mature for high school.