Christian Liberty Press

IQ tests measure cognitive abilities such as problem-solving and reasoning skills, while achievement tests assess specific knowledge or skills acquired through learning. IQ tests are designed to measure potential, while achievement tests evaluate what has been learned or mastered.

There are typically two types of achievement tests: norm-referenced tests and criterion-referenced tests. Norm-referenced tests compare an individual's performance to a larger group, while criterion-referenced tests evaluate a person's performance based on a specific set of criteria or standards.

For children, academic achievement, ability, and intelligence tests may be used as a tool in school placement, in determining the presence of a learning disability or a developmental delay,

Laura S. Hamilton has written:

'Exploring differential item functioning on science achievement tests' -- subject(s): Ability testing, Achievement tests, Science