If a school is administering CBT and giving the tests on the first two days of the CBT test window, does the school have to wait until the makeup period to administer makeup CBT sessions?

No, they do not. The school can choose to administer CBT makeup test sessions at any time after the school's/grade level's primary CBT administration is ended.

As soon as a CBT school has completed its regular two ELA and Math sessions or the Science singular day session, the school may begin administering CBT makeup sessions anytime within the CBT test window.

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