Maybe write out a few bullets of what you want to say to your parents - and practice it, before approaching them
But if they are secretive, and they say they trust you to figure this out, start out by thanking them for putting you in a position where you’re able to think about your future. You appreciate everything they’ve done for you so far. Then tell them because you know college is a freaking ton of money, you’re trying to figure out the best way to put your list together. Tell them you don’t want to waste application fees on schools where you won’t be able to afford it if you get in.
Tell them that being a first gen college student may help you get in to some of these schools. But getting in and being able to pay for it are not the same thing.
So you want to leave them with a couple of things you’re going to need from them.
If they don’t want to show you their tax forms and tell you how much their savings are, you understand, but the schools have to know.
They have these things called the Net Price Calculator - each school has a different formula on how they figure how much aid they can give.
Then, tell them if it helps, you’d like to give them a couple days to think about this and get this info together. You understand you have to do the work yourself, but the reality is that you still need more help, or at least information from them.
Tell them you don’t think its’ fair for them to have to pay every cent of your college, and you are willing to work over the summers and get a work-study job during the school year to help out.
You want to take whatever loans you can get, but you are only allowed a certain amount each year. And you don’t expect them to take Parent Loans - PLUS, as you don’t want them to jeopardize their own future for you - they have done a lot for you already.
You also don’t expect them to re-mortgage their house to try to pay for your college - it’s up to them to think about whether re-financing at a lower interest rate might make sense or not - you have heard/read that some families do things like this, to lower their payment, and free up some cash to pay for college…
But not having any idea at this point whether they’ve squirreled away a quarter-million for you to attend almost any 4 year college you like, or if you’re going to have to try community college for a couple years and transfer later, makes it difficult for you to start getting your list together.
It doesn’t cost anything to run the Net Price Calculator estimates, but it does often cost $75-150 for each school’s application. You don’t want to apply to a couple hundred schools in hope that you’ll magically get in and win a scholarship, but at this point you think it’s probably in your interest to apply to a few that may be within your family budget, so you may be able to compare offers and make the right decision.
Best of luck to you.