Raise the best human that you can.

Encourage and satisfy their curiosity. Books are to be preferred over the internet for this. Letting a kid loose on YouTube isn't really an education.

Encourage and support any type of reading. Non-fiction will build their knowledge-base and enable them to draw connections, parallels, put things in context. Fiction will build their imagination and empathy. Either or both are fine. Whatever they are hungry for.

Provide experiences. These don't have to be expensive vacations to Athens or whatever. Their school likely doesn't have numerous field trips and they likely aren't as interesting as some that we used to have. Museums are fine but a little dull for a child. Think things like getting a tour of a dairy farm or a factory. Again, this is about building connections in the brain and putting things in context.

And, of course, play! Group play, organized play, helps them learn to navigate socially. Playing with an Xbox all day, even with other kids on the headset, isn't sufficient. Kids playing together, making up rules, figuring out who enforces them, how to handle cheaters, how to handle losing gracefully, etc. All of that is practice for adulthood where we have to navigate office politics and drama. Socialization is important. No couch potato!

Giving a child a good brain to take into adulthood is the best way to give them a chance to succeed. At that point, whether college is an option or not, they've got the tool they need to handle anything.