; (B) strengthen educational systems, promote communities of learning, as appropriate, expand access to safe learning environments, including by breaking down specific barriers to basic education for women and girls, ensure continuity of education, including in conflict settings, measurably improve teacher skills and learning outcomes, and support the engagement of parents in the education of their children to help partner countries ensure that all children, including marginalized children and other vulnerable groups, have access to and benefit from quality basic education; (C) promote education as a foundation for sustained economic growth and development within a comprehensive assistance strategy that places partner countries on a trajectory toward graduation from assistance provided under this section with clearly defined benchmarks of success that are used as requirements for related procurement vehicles, such as grants, contracts, and cooperative agreements