Otis–Lennon School Ability Test

The Otis–Lennon School Ability Test (OLSAT), published by the successor of Harcourt Assessment—Pearson Education, Inc., a subsidiary of Pearson PLC—is according to the publisher, a test of abstract thinking and reasoning ability of children pre-K to 18. The Otis-Lennon is group-administered (except preschool), multiple choice, taken with pencil and paper, measures verbal, quantitative, and spatial reasoning ability.

Source: Wikipedia — Otis–Lennon School Ability Test (CC BY-SA 4.0)