How important is this to you?

My husband seems to think we can afford a $7500 tuition for our oldest and a discounted tuition of $6000 for our youngest. So split that into 10 payments for the school year for the rest of their lives. It’s got me stressed. My husband makes $6500 a month so it seems doable but then add mortgage and he wants to buy a truck which our vehicles are paid off right now. So add a truck note. I went to public school and my husband went to private. His reasoning for wanting our kids to go was materialistic and superficial. Not for the benefit of their education really. Yes he wants them to have a better education but mainly it’s for materialistic reasoning. To me I don’t care as long as they’re getting an education and we’re not drowning in bills. I tried to explain why I’m hesitant but we just argue. Give me some insight ladies.