Amount I should use for taxes

My son is a FT Student and works PT. For his schooling, he received more money than his tuition and expenses. I know he has to claim the surplus as income but here is my specific question:

 

He started in fall 2023 and the school reported his scholarships for BOTH fall and Jan 2024 semester. Half of the amount he received in scholarship money is actually for 2024. Does he need to report the full amount because that is what is in box 5 or can he just report the money he received for fall (2023) because this is 2023 taxes?