School Subject (according to ISCED):
    00 - Generic programmes and qualifications
    002 - Literacy and numeracy
    05 - Natural sciences, mathematics and statistics
    054 - Mathematics and statistics
    0541 - Mathematics

Level of Education: ISCED 1 - Primary level

Country of Use: Spain

School Subject (according to ISCED):
    02 - Arts and humanities
    023 - Languages
    0232 - Literature and linguistics

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Country of Use: Spain

School Subject (according to ISCED):
    03 - Social sciences, journalism and information
    031 - Social and behavioural sciences
    0312 - Political sciences and civics

Level of Education: Not specified

School Subject (according to ISCED):
    05 - Natural sciences, mathematics and statistics
    053 - Physical sciences
    0532 - Earth sciences

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Country of Use: Spain

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Country of Use: Spain

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Country of Use: Spain

School Subject (according to ISCED): Not specified

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Level of Education: Not specified

Country of Use: Mexico

School Subject (according to ISCED):
    02 - Arts and humanities
    023 - Languages
    0232 - Literature and linguistics

Level of Education: ISCED 1 - Primary level

Country of Use: Spain

School Subject (according to ISCED):
    02 - Arts and humanities
    022 - Humanities (except languages)
    0222 - History and archaeology

Level of Education:
    ISCED 2 - Lower secondary level
    ISCED 3 - Upper secondary level

Country of Use: Spain