To start with,
To teach creationism in public school science classes.
To require fundamentalist Protestant prayer and Bible study of all students, regardless of their religion (this is known as "putting God back in the schools").
That's the minimum, but it goes farther. Some years ago, a slate of creationists was elected to the school board of Vista, California (a residential suburb of San Diego). Besides the above, their program included such things as,
Forbidding the teaching of tolerance of ambiguity and diversity.
Forbidding the teaching about women who have achieved success in careers outside the home.
Bolting the students' desks to the floor to eliminate group work, which undercuts the divinely ordained authority of the teacher.
Teaching blatantly revisionist US history (a la David Barton)
Eliminating any kind of sex education.
And so on, all pretty typical of creationist goals still today.
Or you can just take a look at the campaign platform of your creationist Poster Boy, Judge Roy Moore (leaving aside his alleged pedophilia; he is from Alabama, after all).
I've lived in the Bible Belt and seen this kind of thing in action for myself where creationists have political power, for instance little kids being routinely harrassed and bullied by their teachers for belonging to the "wrong religion." Creationists look back to the bad old days of the 19th century when Evangelical Protestantism enjoyed an entirely unwarranted status as the unofficial state religion. They see themselves as the true heirs of that Golden Age and want to bring it back. No thanks.