in class
prep. phr..prep. phr.. This means you are in a classroom during a lesson, or attending a scheduled course.
prep. phr.. A prepositional phrase indicating a person's presence and participation in a scheduled period of instruction, typically within an educational institution.
Please be quiet in class.
He was always the first person to raise his hand in class.
The most profound insights often arose not from the lecture itself, but from the spirited discussions that took place in class afterwards.
Often used without an article ('a' or 'the') to refer to the general activity of attending a lesson.
Contrast 'in class' (attending the lesson as an activity) with 'in the class' (referring to the specific group of students or the physical room).
I am in the class right now, I'll call you back.I am in class right now, I'll call you back.When referring to the general activity of being in a lesson, no article is needed before 'class'.