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A phase is a dated stretch of the student’s plan, such as a break card from March 3. Sightline places each observation in a phase by its date, so you don’t tag observations yourself.

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Add a phase

1

Open the case file

Open the student, select Case File, then Add phase under Intervention phases.
2

Enter the phase

Enter a Start date and a Phase name. Add an End date once the phase is over. Use Notes for what changed.
3

Save

Select Save. To edit a phase later, select it. Remove phase is inside the editor.

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How observations are assigned to phases

  • An observation belongs to the phase whose dates include its date.
  • Observations outside every phase, such as those before your first phase, count as Baseline. You don’t need a Baseline phase.
  • From a new phase’s start date, observations belong to it, even if the previous phase has no End date.
  • Leave Context empty unless the phase applies in one setting only. If you fill it in, the phase covers only observations whose Setting matches it exactly, ignoring capitals.

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Where your data appears

In Compare, once the observations span two or more phases, the Over time chart labels each phase and divides them. The Session record groups observations by phase and adds a Difference from the previous phase: the change in the average. It is left out when the method or interval setup changed between phases. Select a phase’s heading to focus on it. See Compare observations.

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Good to know

A difference between phases can come from how or when you observed. Before reporting it as a change in behavior, check that the definitions, methods, observation lengths, and conditions match.