Rigorous courses get more students

In February 1995, when Argie Johnson was superintendent, the Board of
Education voted to phase in stiffer graduation requirements. In August 1998,
the board hand-picked by Mayor Daley moved up the timetable
and added requirements. Students are now required to take four years of
English, two of a world language and three each of math, science and social
studies.

*Advanced math combines three courses: College algebra, analytic geometry
and pre-calculus.

Source: Chicago Public Schools