The stay at home rule could be lifted on 5 April, with the economy starting to reopen later in the month.
She said there would be a “progressive easing” of restrictions before then, with four people from two households allowed to meet outdoors from 15 March.
All primary and more secondary school pupils could return from that date.
It is hoped to lift the stay at home restriction on 5 April.
Ms Sturgeon said it would be necessary to “rely very heavily” on restrictions to suppress the virus for “a bit longer”.
She said the Scottish government’s strategic framework was “deliberately cautious” at this stage.
“But in the coming weeks, if the data allows and positive trends continue, we will seek to accelerate the easing of restrictions,” she said.
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