University faculty led a three-year teacher professional development initiative to integrate technology into instruction in two rural, highpoverty middle schools in the Southeast. The study demonstrates that schoolwide professional development sustained over two to three years improves efficiency and effectiveness of instruction and produces significant increases in end-of-grade assessment scores, with the greatest gain after three years. In addition, gains in student achievement as measured by standardized achievement tests in math and science are especially great for African-American students who have long-term exposure to teachers engaged in professional learning.
Sufficient resolution between two isomer peaks is less than 50% the average two peak heights at the midpoint concentration level (8270D). This collected on an Agilent 7890B GC coupled to an Agilent 5977B Inert Plus GC/ MSD equipped with a SSL inlet.
