Dean Allen, CEO of Seattle-based contractor McKinstry, is not OK with too many kids in the state giving up on the study of science, technology, engineering and math. In fact, the head of one of the Northwest's largest mechanical-electrical firms is so frustrated that the lack of STEM proficiency could impact the firm's future workforce, he is leading a new statewide public-private advocacy group that has pledged $100 million over the next decade to improve instruction and student experience in those core fields, both in school and out of the classroom.