Fastcar, in the summary section, in the last sentence of the first paragraph, he said that my son is "exceptionally gifted" so maybe look in the summary section?

If you look at page 9 of that pdf doc that was linked above, you will see SB5 uses different terms. When I look at that I can see that his score lines up with "very gifted/highly advanced" which is on the same line as "exceptionally gifted". From that chart (eventhough there are no exact direct equivalences), I gather that 139 on SB5 is gifted or very advanced, which in the SB-LM terms would be considered highly gifted. Why don't you check with the tester? I found him to be very approachable and helpful. I have heard the same about the other tester in the practice.