Highly Able (also called Gifted and Talented) learners are those with abilities that are significantly stronger than abilities of most people of a similar age. High abilities can be general (cognitive) abilities or in a specific area of interest. Generally, a person can be given a diagnosis of being highly able if their cognitive abilities are approximately two standard deviations above the mean for their age. High ability is measured using a standardised assessment tool, such as the Wechsler Intelligence Scale for Children (WISC-V). However, there is no agreed definition of giftedness or high ability. It is possible that young children who have been diagnosed as being highly able no longer meet that criteria later in their school life.