MTTC scoring

I am scheduled to take the MTTC for a PK-3 cert. I’ve calculated the weighted scoring on two of the free practice tests that were included w/ registration. I scored 260 on the Literacy test and 270 on the Professional Skills and Knowledge test. (I weighted the raw scores of each sub area of each test and then converted the total weighted score to the 100-300 scale.)

With these practice tests being significantly shorter, would they be an accurate measure for readiness?