San Marino
definition: age 10 and over can read and write
total population: 96%
male: 97%
female: 95% (1976 est.)

Sao Tome and Principe
definition: age 15 and over can read and write
total population: 79.3%
male: 85%
female: 62% (1991 est.)

Saudi Arabia
definition: age 15 and over can read and write
total population: 78.8%
male: 84.7%
female: 70.8% (2003 est.)

Senegal
definition: age 15 and over can read and write
total population: 40.2%
male: 50%
female: 30.7% (2003 est.)

Serbia and Montenegro
definition: age 15 and over can read and write
total population: 93%
male: 97.2%
female: 88.9% (1991)

Seychelles
definition: age 15 and over can read and write
total population: 58%
male: 56%
female: 60% (1971 est.)

Sierra Leone
definition: age 15 and over can read and write English,
Mende, Temne, or Arabic
total population: 31.4%
male: 45.4%
female: 18.2% (1995 est.)

Singapore
definition: age 15 and over can read and write
total population: 92.5%
male: 96.6%
female: 88.6% (2002)

Slovakia
definition: NA
total population: NA
male: NA
female: NA

Slovenia
definition: NA
total population: 99.7%
male: 99.7%
female: 99.6% (2003 est.)