“From my impression( In talking with students there from my school and past family friends that have attended) is that the school is for highly intelligent “slackers” from well to do families.These students are mostly very capable,but they seem to be more focused on partying rather than academics.Is this stereotype true?”
Trinity is less selective than many of the other NESCAC colleges. Of the students I’ve known who have gone to Trinity, your description does fit the bill in many cases or kids who are bright enough but I wouldn’t call them 'highly intelligent". They do tend to be more preppy and conservative on average.
That said, Trinity does have good alumni inroads to finance jobs in NYC.
Additionally, although I would put Trinity on the lower end of the NESCAC rankings, ALL the NESCAC schools are good institutions providing a very solid education. With good performance, you can access any grad programs and have solid career options from any of them.
If you like the vibe at Trinity, go for it.