Critique request for my monologue: 我下课以后常常去我的实习。 我以后我的实习我有课一遍。……
Hope this will help.

Correction

我下课以后常常去实习 （ i often go to intern-ship whenever the class is finish ).
实习以后我还有一堂课（After the inter-ship i still have a lesson).
我的最后一堂课有时会在六点钟结束，而其它天都会在八点钟结束。 (My last lesson will ended at 6 o'Clock sometimes,while others day will ended at 8 o'Clock) .
然后我就会开始做作业。（Then i will start to do my homework) .
每周至少有一天我都会有个Amnesty International会议. （At least one day a week i will have a meeting of Amnesty International. 
这组/会议是由我和我男朋友举办/开始，它是关于人权。(This group/meeting is organized/started by me and my boyfriend, It's about human rights.
如果我有会议，我得回家作业我开始后。// im not sure what you're trying to express here ,perhaps you can translate it to English first and then i will help you to translate it back to Chinese/ 
奖学金的条件是必须拥有五个科目，所以我几乎每天都有课。(The requirements of scholarships is must have five subjects, therefore i almost have classes everyday. 
周末，我也必须学习。 (Weekend, i have to learn also) 
如果我有空闲的时间，我会尝试在星期五和朋友一起出去游玩及在星期日与妈妈一起共餐. (If i have free time, i will try to go out and play with friends on Friday, and having meals with mother on Sunday.
有时我担心我没时间。 (Sometimes I worry that I do not have time).
如实, 我很忙和不能等到休息。 // im not sure what you're trying to express here 
但是, 我觉得这些机会是很庆幸的 。 （However, I feel that these opportunities are very fortunate)