SCC carried out a survey and also asked schools for feedback on the plan for a two week half term in the autumn term.
Afterwards, it said there is a "clear appetite" for the change, with 60% of schools in favour of the change, 30% against and a further 10% being undecided.
The two week break for community and voluntary controlled schools will begin in the 2026/27 academic year.
Five days will be taken away from the summer holiday which starts in July 2027.
Councillor Jonathan Hulley, Cabinet Member for Children, Families and Lifelong Learning at SCC, said: "While the majority of feedback we have received supports this change, we appreciate that this is not the preferred option for some families, which is why we are allowing plenty of time to plan for the new arrangements."
There is a legal limit of a minimum of 190 school days each year.

