The phrase "a classmate with a" is correct and usable in written English.
You can use it when describing a classmate who possesses a certain quality, characteristic, or item.
Example: "I have a classmate with a great sense of humor who always makes the class enjoyable."
Alternatives: "a peer who has a" or "a fellow student with a".
A girl had spotted a classmate with a gun and reported it to an administrator.
She often got e-mail meant for a classmate with a similar name.
He and a classmate with a new camera had driven to Manhattan to take photographs for Mr. Lockwood's senior thesis.
His parents sent him to military academy after he burned down his sister's treehouse, but he was expelled after hitting a classmate with a tyre.
"One of my first experiences was waiting in line in my elementary school and seeing a classmate with a can of Goldwater ginger ale," he said.
He said he saw a classmate with a gun to his own head as a school resource officer rounded a corner at the Southern Maryland school.
The four exceptions are a child who got the disease from a classmate with an infected parent, a flight attendant who served an infected doctor from Singapore on a flight in Europe, a cab driver and a vegetable salesman.
As a child, Estianty often fought with her classmates; in an interview with the weekly entertainment magazine Tabloid Nova, she recalled that, while at Yohanes Gabriel Catholic Elementary School in Surabaya, she once hit a classmate with an object so hard that the classmate began to bleed profusely.
When my daughter was in elementary school she had a classmate with just a few patches of hair on an otherwise bald scalp.
And when Jordan and his friends put together a fund-raising dance for a classmate with multiple sclerosis, Ari did not show up.
Updated 6 57 p.m. | A Brooklyn high school student attacked a classmate with hydrochloric acid Wednesday morning during a chemistry lesson, telling the authorities that she was trying to burn the classmate's eyes out, officials said.
