10/06/21 01:44:06
Except in the case of citizenship, attainment targets consist of eight
level descriptions of increasing difficulty, plus a description for
exceptional performance above level 8.
英国の教育に関する文章（？）の一部です。文中の'description'と'performance'をどんな日本語に直せば自然な文章になるでしょうか。
ちなみにこの前の文は
An attainment target sets out the ‘knowledge, skills and understanding
that pupils of different abilities and maturities are expected to have
by the end of each key stage’.
です。