Oh yeah, that’s true. If he started in 2017/18, then he would end in 2024/25

Is this talking about the cursed child

No, in the epilogue of deathly hallows, it says 19 yrs later and since 19+1998=2017 and Albus is going into his first year, and 2017+7=2024, then he would end Hogwarts in 2024/25. So Albus is graduating this year in May.