As you can see, with some planning, your excavation cost difference should be minimal. Footings: Cost for footings should be the same for a crawlspace or basement based on an average load bearing of the soil at 2000 psf (pounds per square foot). Walls: 4 foot high for crawlspace and 8 foot high for a basement.
But if your in-test-center score report says 156 and your actual final Praxis Core Math score is 14 points lower, it seems possible that there could be a mistake. The real issue is whether the 156 score is a mistake or the 142 score is a mistake.
Remember that the new PSAT is scored between 320 and 1520, which is a composite of the Math section and the Reading and Writing sections together. To score in the 70th percentile or above, you want to aim for at least a 490 in Reading and Writing and a 500 in Math (or a composite of 990).