No religious doctrine outside a comparative religions course, that gives equal time to each of the five major world religions. This includes but is not limited to “moments of silence”, “abstinence-only sex ed”, and creationism taught as science.
Standardized tests will be straightforward, and not set up in such a way as to require the school to spend time “teaching the test”.
Separate students based on ability – don’t hold back the entire class from pre-algebra because five kids can’t figure out how to do long division.
Integrate subjects. History is so much more interesting when the humanities are added in.
Pay teachers what they’re worth, regardless of “tenure”. Get rid of ineffective teachers. When a teacher has a 98% failure rate, and that includes the Valedictorian, one might want to take a look at his methods.