What is the line between self-confidence and arrogance? Type 280 letters, no more then that.
Getting some of your info from this site.
http://thesportjournal. org/article/when-pride-goes-wrong/

differences

Explanation:

self confidence "a feeling of trust in ones abilities, qualities and judgments"

arrogance "showing an offensive attitude of superiority."

exaggerated ''regarded or represented as larger, better, or worse than in reality.''

one is kinda more like a reality and one is like a made up story, even tho it may be true they are acting so they feel a kind of self confidence, and so that others see them in such a light.  

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.

hm, switch the relative; nominative and indefinite; objective ? not too bright in the knowledge of the english.