In 2006 (I was 23), I announced to my parents that I was applying for a PhD in the US... which meant moving abroad for approximately 4-6 years. They didn't really say anything about it except that it was my choice (I'd already lived in the US on my own for a year in 2003/04).
It wasn't until 8 months after I'd moved there in 2008 and I'd decided I wasn't happy and wanted to move back to the UK that my mum even told me how much she missed me, how glad she was that I was coming home and that she never really wanted me to go in the first place
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I'd spent months over there feeling miserable and trying to make a decision about whether to stay in the US or leave the PhD and come home, but when I asked her why she didn't say anything sooner, she said she didn't want to influence my decision!
Well uni seems more difficult here.
Maybe it depends on the degree subject - when I studied abroad in the US in my third year of uni, the year I spent in the US was by far the most difficult and demanding of my entire degree. I worked harder in the US than in the other 3 years of my degree combined
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For example, I'm doing a dissertation in my final semester and all of my American friends studying all over the US do not have to do one.
A dissertation is pretty much required for any UK degree, whereas it isn't necessarily required in the US. Essentially, for a UK degree, if you don't write a dissertation, you can't graduate with honours (i.e. you can't get higher than a Pass degree).
This isn't strictly always the case, since certain UK courses may have alternatives to writing a dissertation, but for most degrees, the dissertation will count for a good percentage of the final year grade - I think mine was worth 60 credits, so 50% of my final year, and so without those dissertation credits, I wouldn't have been able to graduate with honours.
Also, a few of my friends went abroad from the UK to the US last semester and they had to be put in masters classes and got 90's there while they were struggling to get 70's here.
This happened to me... I went straight from second year UK classes to 400- and 500-level US classes.
However, I believe this is discrepancy mostly due to the fact that before we start university in the UK, we already have 14 years of full-time education (age 4-18) under our belts and we have already covered most of the content in 100- and maybe 200-level classes in our A levels... so there's no point in going into 200- or 300-level classes when we've already covered that material in the UK.
The way it seemed to work at the US university I attended was that the first year or two seemed fairly easy because it covered mostly A-level material and a little bit further, but then the last 2 years were really full-on and difficult because they were essentially cramming 3 years of a UK degree into just 2 years!
Regarding the percentage grades, a 70% in the UK is basically equivalent to a 90% in the US... it can be extremely difficult to get higher than a 70% in the UK, but then you're not really expected to be able to score much higher than 70% or 80% in the first place.
I had a GPA of 3.25 in the US and got mostly A's and B's in my classes... when my grades were translated into UK equivalents, I ended up with 66%, 63% and 50% (2:1 and 2:2 grades)! Even the classes I got 90-95% in were translated to 66% - an 'average' 2:1 in the UK.
Personally I thought it was unfair that all my hard work in the US ended up only being worth a low-2:1 average. Those grade translations cost me my chance of getting a 1st class degree, since they meant I would have needed to average 80% in my final year to get a First (which I didn't).