I have conducted numerous usability studies both remotely and in-person on location with multiple age groups from 8 years old to adult. In this example for Fulcrum IT's U.S. Department of Education client, I conducted a major prototype study before the product finalization of a new computer-based assessment, this one for Technology and Engineering Literacy (TEL), I wrote the protocols, designed the tasks and survey, supervised a team of observers and facilitators, and traveled to schools in three states to observe 8th grade students take the prototype assessment. After the study, I conducted the analysis of student surveys, observations, task completion, and typing speed. Recommendations for UI changes and system design from the study results were incorporated into the final assessment. Read more about TEL here: http://nces.ed.gov/nationsreportcard/tel/