Hi Kathy, 

This is really good; I just made a few small changes in bold. Also, well done on passing your test :)

2014.8.25

I got up at 6:30am and went to the driving school. After we got on school bus, we set up at 7:55am. There were 2 buses and about 60 people in total. We were going to take the first test of the four driving tests in Beichuan County. It was a little far and took about 50 minutes to get there. It rained on the way and I didn't take an umbrella. Luckily it only just rained a little bit. I finished my test (I made no mistakes and got 100) at 10:00 and got back. When I got home it was 12:40 and I was so hungry.

2014.8.25

I got up at 6:30am and went on my way to school to driving school. After we got on the  school bus, we set up off  at 7:55am. There were 2 buses and about 60 people in total. We were going to take the first test of the four driving tests in Beichuan County. It was a little far , and took about 50 minutes to get there. It rained on the way and I didn't take an umbrella. Lukily  Luckily it just rained a little. I finished my test (I made no mistake and got 100) at 10:00 am  and got we went back. When I got home it was 12:40 and I was so hungry.

Well done , have a nice day  .      Ian  ,  English teacher  - China .