Hi Pasumarthi,

To get a vague idea on admissions into architecture colleges, your son's NATA cutoff is required. NATA cutoff is different from NATA score. The calculation of NATA marks is done by adding the 12th board or HSC percentage (outof 100) with the half of NATA score. 

If your son's cutoff is above 100/200, then you might get a seat in a very decent college.

All The Best