Getting your Trinity Audio player ready... LOWELL — Some 800 seniors graduated from Lowell High School Wednesday night, supported by and cheered on by more than 4,000 friends, family and educators at the Tsongas Center. The Tuomi family, grandparents Nancy and Dennis, and father, Matti, arrived early to grab front-row seats to have an up-close view of Haylah Tuomi, as she paraded in with her classmates at the start of ceremony.