The quantitative gains have not always been matched by qualitative ones. Primary schools in particular still lack resources, and the teachers are less well paid than their secondary school colleagues. The Botswana Ministry of Education is working to establish libraries in primary schools in partnership with the African Library Project. The Government of Botswana hopes that by investing a large part of national income in education, the country will become less dependent on diamonds for its economic survival, and less dependent on expatriates for its skilled workers. Those objectives are in part pursued through policies in favour of vocational education, gathered within the NPVET (National Policy on Vocational Education and Training), aiming to "integrate the different types of vocational education and training into one comprehensive system". Botswana invests 21% of its government spending in education.