In England, a partially selective school is one of a few dozen state-funded secondary schools that select a proportion of their intake by ability or aptitude, permitted as a continuation of arrangements that existed prior to 1997. Though treated together by current legislation, they are of two types: bilateral schools in remnants of the Tripartite System, and former grant-maintained schools that introduced partial selection in the 1990s. While technically classified as comprehensive schools, they occupy a middle ground between grammar schools and true comprehensives, and many of the arguments for and against grammar schools also apply to these schools.