"focus in class" is correct and can be used in written English.
It means paying attention and concentrating on the lesson or discussion happening in the classroom. Example: "It is important for students to have good focus in class in order to understand the material being taught."
She couldn't focus in class, and in a moment of despair she swallowed 60 ibuprofen tablets.
"They help kids gather up focus in class, and help us learn," Shimee said.
Many buy prescription drugs on the black market or the Internet with the goal of improving their focus in class, their moods, their sex lives, their stamina and their bodies.
Frosted Mini-Wheats won't help your child focus in class.
The heat can make it harder to focus in class. .
Though she had the potential to be a strong student, she couldn't focus in class.
Do difficulties focusing in class and a tendency to forget assignments indicate a need for medication?
He was doing poorly in school, struggling to stay focused in class, and his teachers started suggesting he had attention-deficit disorder.
Clearly, understanding the nature of the these attentional disengagements and for whom, and under what circumstances, they are most frequent is important in order to not only understand how the attentional system operates in the real world but to also devise better interventions to keep students focused in class and while studying to ensure better learning and retention of material.
As a result, she claimed that students in Taiwan developed calm personalities that helped them to stay focused in class to learn the correct knowledge whereas the US students developed more expressive personalities that eventually contributed to different perspectives in the society.
Not only that, but students report feeling more engaged and focused in class and throughout the day.
