Those results look good, but you will need the ammonia reading. Personally I dont trust those 5in1 strips.
When I started, I also bought those strips cause the LFS recommended it to me. But they are not accurate, if you are serious about water conditions, which any aquarist should be, you will rather buy your son an API Master testkit which will last him for years.
And he will never have to guess about water conditions again and will save a lot of fish just by having the right testing equipment.
Thats just my opinion, but maybe there will be some other replies, who had success with the 5in1 strips.