Districts in communities experiencing population shifts are being challenged to address three concerns simultaneously: be responsive to the strengths and educational needs of students from increasingly diverse backgrounds, provide meaningful professional development for an expanding or contracting workforce to meet those needs, and ensure that state and federal accountability targets are met. This study reports on the efforts of one such district to design and implement a district-wide content literacy instructional plan for its middle and high schools. The results of the study show that the district was able to meet all accountability targets despite shifts in student demographics and a 16% increase in the number of teachers on staff.