I recently took the SSAT ( Secondary School Admissions Test ) and I got a 2103 Score with a 73 Percentile. I am applying for Lawrenceville Prep, Pennington, and Hun. Is my SSAT score competitive enough to get accepted to those schools ( aside for interviews, interests, etc.)
You should check Test Innovators SSAT Target Score page for your schools.
When I checked just now, you were in range for Pennington and Hun while you needed a little more for Lawrenceville.
For Lawrenceville you will need a higher score to be competitive. Preferably in the mid 80s. But they are holistic and look at other factors (esp whether you need financial aid).
Probably too low for Lawrenceville unless you are being recruited as an athlete.
Scoring a 73% on your first try with little to no prep is quite good, however.