• Before completing the CSO Calibration Practices, new observers are responsible for attending a live training session and reviewing the observation tool and supporting documents.
  
• Primary observers will complete a total of three calibration practices; one practice should be completed approximately one week before the corresponding classroom observation (e.g., CSO Calibration Practice 2 should be completed one week before your second classroom observation).
  
• As a reminder, you will need to recruit a secondary observer to conduct one of three classroom observations required for each teacher. If a teacher is participating in observations for Grade 4 and Grade 5, the researcher should have a secondary observer conduct a classroom observation for each grade. Please see ‘Requirements for secondary observers’ for more information on secondary observer requirements.

• Before completing the CSO Calibration Practices, returning observers are responsible for reviewing the observation tool and supporting documents.
  
• Primary observers will complete a total of three calibration practices; one practice should be completed approximately one week before the corresponding classroom observation (e.g., CSO Calibration Practice 2 should be completed one week before your second classroom observation).
  
• As a reminder, you will need to recruit a secondary observer to conduct one of three classroom observations required for each teacher. If a teacher is participating in observations for Grade 4 and Grade 5, the researcher should have a secondary observer conduct a classroom observation for each grade. Please see ‘Requirements for secondary observers’ for more information on secondary observer requirements.

Primary observers are are asked to work with a secondary observer to conduct one of three classroom observations required for each teacher. If a teacher is participating in observations for Grade 4 and Grade 5, the researcher should have a secondary observer conduct a classroom observation for each grade.

Prior to conducting the observation, secondary observers are responsible for completing the following items:

• Watch the prerecorded training session
• Review the observation tool and supporting documents
• Complete the corresponding calibration practice*

* Secondary observers should communicate with the primary observer on which CSO Calibration Practice to complete. For example, if you will be working with the primary observer to conduct their second observation, then you should complete CSO Calibration Practice 2.

The one calibration practice required of the secondary observer should be completed approximately one week before the corresponding classroom observation (e.g., CSO Calibration Practice 2 should be completed one week before the second classroom observation).