During lab courses, students get a hands-on experience of the subject being taught during the lecture. Some classes may require a lab partner, while upper-division classes may have solo science experiments. College labs are most often attached to science and pre-med classes.

A laboratory is an elementary or secondary school operated in association with a university, college, or other teacher education institution and used for the training of future teachers, educational experimentation, educational research, and professional development.

Anyway, college labs are a little bit different. The way I have seen it, we typically have lecture three times a week (for 30 minutes each), then a lab section once a week . Usually the labs do not last the full time, but today my OChem lab today did.