How about asking him? We can't read his mind. If he's your boyfriend, you should be able to talk to him about this stuff.
Why did my boyfriend say this? He recently got a new job and he was telling me how much he'll earn. Then he said "it will raise a nice family" then he said " I need it for my college tuition next year" why the sudden contradiction?
Doesn't seem like a contradiction to me. Sounds like he is planning a future. He may even be making enough for both.
He has a job at entry level. He gets the college education he needs to climb the ladder so he can make a better income, one that will afford a family. No contradiction, just planning ahead.