Mobility: While performing the duties of this job, the employee is regularly required to stand and walk for prolonged periods of time, push or pull 18-26 lbs., sit, kneel and crouch, twist and bend, use hands to type, finger, handle, or feel; and reach with hands and arm. QUALIFICATIONS REQUIRED: Valid Washington State Teacher''s Certificate appropriate with endorsement in K-8 or Mathematic and Science or Middle Level Math and Middle level Science.