The text is a record of the teaching career of Mrs. Margaret Franklin Costello in Loudoun County, Virginia. It details her personal information, educational background, teaching experience, and performance evaluations. She began teaching in 1918 at Broad Run, then moved to various schools teaching different grades until she stopped teaching in 1943. The document also includes evaluations of her qualifications, recitation skills, and her relation to the school and community. Mrs. Costello is shown to have an average to good performance in these areas, with particular strengths in professional interest and governing ability. Her teaching career spanned several decades, reflecting the historical context of education in Loudoun County during this time period.