John Hollingsworth is president of DataWORKS Educational Research, a company that uses real data to improve student achievement. In addition to his work at DataWORKS training teachers and administrators throughout the U.S.,ï¿½Hollingsworth is an active researcher and presenter who has published numerous articles in educational magazines and coauthored Multiple Measures: Accurate Ways to Assess Student Achievement ï¿½(Corwin Pressï¿½2000).
Silvia Ybarra began her career in education as a physics and chemistry teacher at Roosevelt High School in Fresno, California. She next became principal of Wilson Middle School in Exeter, California, which under her leadership became a prestigious Blue Ribbon school. Ybarra was then named assistant superintendent of Coalinga-Huron School District. Her focus progressed from helping one classroom to helping one school to helping an entire district. Ybarra cofounded DataWORKS Educational Research to improve learning for low-income and minority children. She also co-authored Multiple Measures: Accurate Ways to Assess Student Achievement ï¿½(Corwin Pressï¿½2000) with her husband, John Hollingsworth.