Complex sentence: Washington High School is one of the most storied American football programs in the country, having won a national record 35 state championships since 1906, as well as having a national record of 14 consecutive state championship wins from 1951-1964.
Split into simpler sentences: Washington High School is one of the most storied American football programs in the country, having won a national record 35 state championships since 1906. As well as having a national record of 14 consecutive state chamionship wins from 1951-1964.