Complex sentence: He passed his Intermediate Certificate, was the first student in a wheelchair in New South Wales, Australia to attend a public high school, first student from Northcott to obtain the Leaving Certificate, achieved an Honours Grade in Economics and Commonwealth University Scholarship.
Split into simpler sentences: He passed his Intermediate Certificate and was the first student in a wheelchair in New South Wales, Australia to attend a public high school. He was the first student from Northcott to obtain the Leaving Certificate and achieved an Honours Grade in Economics and Commonwealth University Scholarship.