attainer
noun
a person who attains, achieves, or reaches something.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"To suggest lower attainers would be better off without the additional help provided by teaching assistants is wrong - but of course it's up to schools themselves to decide how to deploy them."
From BBC ● Mar. 30, 2010