Post-literacy is all the means and activities that allow persons who have recently become literate to make use of their skills and to increase and deepen the knowledge acquired. There are many kinds of literacy. What they all have in common is the merciless test of the durability of literacy's effect: After 1, 2, or 5 years, what will the beneficiaries have retained and what uses will they be making of their literacy? Relapse to illiteracy is one of the most serious threats to literacy because it is very widespread and because it leaves its victims, who sacrificed to become literate, more destitute and less motivated. The remedy is post-literacy. The three aspects that are involved in providing post-literacy are the production of materials to which the knowledge acquired can be applied; the creation of a literacy environment; and the possibility of access to higher levels of responsibility for newly literate people. Reading materials for new readers include general interest books, short, easy-to-read popular works that provide practical information; periodicals; publications of a less didactic, more entertaining nature, such as comic strips; calendars, posters, leaflets, and booklets; and audiovisual media. Because most of the world's illiterate people live in an environment virtually bereft of written material of any kind, the cooperation must be sought of all decision-makers in those areas who are in a position to contribute to the multiplication of public, written information. No literacy project can be effective without attending to post-literacy. (CML)