The phrase 'marks at school' is correct and usable in written English.
You can use it when you are talking about grades or scores achieved in a school setting. For example, "My son got excellent marks at school this year."
Her former high marks at school crashed.
The kids were given poor marks at school.
They tend to achieve higher marks at school, be better adjusted and have greater self-confidence.
Her marks at school were good and she had lots of friends.
Children ask for better marks at school, the sick for good health, while lonely hearts pray for love.
I had very good marks at school, but we do not have money for books or uniforms.
We're here from 8am to 5pm so I'll do marking at school but then when I'm at home, after I've taken my daughter to bed I'll open my laptop and do a couple of hours of planning.
"I got five (the best mark) at school yesterday," Ivan says proudly and runs for his book to show us.
What Amanda remembered was glasses, a flat chest, hand-me-down bobbled jumpers (Amanda had refused to wear hers, once the wool went like that), a reputation for good marks at the school where she had a scholarship (not the school that Amanda paid for), and a stubborn, sulking resistance to Amanda, who — used to capitulation — had been intrigued.
Ofsted's head warned some pupils, who got top marks at primary school, were not doing as well at secondary school.
The meandering, overstuffed scenario of "Love Sick" might not get high marks at film school, but the crowded cast of characters and the abrupt mood swings and lapses in logic suggest the emotional anarchy of adolescence.
