The biggest difference is that high school kids who aren’t motivated are your job to teach anyway. You can’t just shrug them off and let them fail (at least not if you’re a good teacher). At any college, you can try as much as you’re willing to, but iltimately the student is an adult going to make his own choices and his parents are not likely to step in and support you.

On the positive side of community college, many of those students are investing their own money in that education and that motivates many of them to succeed.

Best wishes.
References :

I would suggest that you adopt ’science’ as a ‘hobby’ to increase your interest. If you must study friction, in addition to your class lectures, notes, and text, try looking up ‘friction’ plus ‘illustrated,’ etc. on a search engine like Google and you may understand the topic better and even ’see’ how math supports the topic. There are very few topics that can not easily be researched. But you will also be learning how to do personal research (on any topic) including how to find clear explanations and illustrations or diagrams. That is a skill that can enhance interest, depth of knowledge and hopefully result in better grades. You may even wish to consider becoming an engineer who must daily apply math and science to very interesting tasks. At least you will have far richer options on hand when you select a career. It has been said that education is what is left after you have forgotten every word mentioned in class. The very best of luck to you. You can do it.
References :
http://hyperphysics.phy-astr.gsu.edu/hbase/class/phscilab/friction.html