I went for Korean language classes 10 years ago at a CC. The teacher just taught the grammar for 20mins and copy down the description without explaining to us the meaning. Then she’ll proceed to make us repeat 10-15 times with a radio recorded short convo and sentences containing the grammar for the week.
What I can tell you is that learning language is not just repeating lines, you’ll have to practice the grammar and the teacher must break down the sentence (when you’re a beginner) to aid your understanding.
If you’re a serious learner, I would suggest you to either learn online (TTMIK, youtube etc) or go to a proper language school (google and you’ll find many). Don’t waste time and money at CC.