In her welcome, Murto, who is class president, thanked the families and loved ones in the audience.
"We wouldn't be here without the love and support of our families," she said, speaking for her classmates.
In blue and white robes, the 185 members of the class of 2005 marched into the ARCC to the familiar Elgar processional music.
The heat again was a factor Friday morning for graduates and the audience as the ARCC ceiling fans tried to keep the muggy air moving through the huge gymnasium.
"It's bittersweet - a little of both," Kathryn Angle said. A budding vocalist, Angle joined two of her classmates, Allison Burley and Carly Wade, in singing the national anthem at the opening of the ceremony.
Before taking the stage, Angle said she was a little nervous about the singing part of the program. After that, she figured walking across the stage would be easy.
Principal Martin Green welcomed all to the 90th commencement exercises for the school and praised this year's graduates.
Salutatorian Nicole Petefish challenged her fellow graduates to hold onto their high school memories - from their scared freshman days to graduation day as they now leave the school as young adults.
Valedictorian Jessica Robertson also asked classmates to cherish the memories of their years at Boonsboro as they begin their new lives.
"It really hasn't hit me yet," Angle said.
In the fall, Angle, 17, will be off to Carson-Newman College in Jefferson City, Tenn., where she will major in voice.