The Child Observation Record (COR) is a way of assessing a child's development, primarily used by schools that employ the HighScope method, although it can be used by anyone wishing to evaluate the learning skills of a preschooler.
There are six categories in the Preschool COR and within categories are lists of 32 items to observe. Everything is broken down further into five developmental levels that range from (1) simple to (5) more complex.
The COR is an ongoing process. Teachers observe the preschooler in class and then write down anecdotes that describe what the child did. The notes are then inputted into the computer and then rated into the categories, items and levels.
The thinking is that these series of notes, over time will provide a vision of the child as a whole, including developmental milestones, successes and problems.
There are CORs for different age groups. The Preschool COR is used to assess children 2½ to 6 years old while the Infant-Toddler COR is for children between the ages of 6 weeks and 3 years.