PlayMagnus: Rating by age ? Measuring kids chess rating.

Hi,

I'm a chess teacher in a small chess club in Norway.

When parents contact me and ask about their kids relative playing strength (rating) I find it difficult to give a good answer based on observation. I often ask them to test the kids skill by using the PlayMagnus app.
But how strong is Magnus of different ages?

5 yrs;
5 1/2 yrs:
6 yrs:

6 1/2 yrs:
7 yrs:

7 1/2 yrs:
8 yrs:
9 yrs:
10 yrs:
11 yrs: 
12 yrs:
13 yrs:
14 yrs:
15 yrs:
16 yrs:
17 yrs:
18 yrs:
19 yrs:
20 yrs:
21 yrs: 
22 yrs:
23 yrs:
24 yrs:
25 yrs:
26 yrs:
27 yrs:

I heard that Magnus was a master by 12. So I think age 12 is about 2200 or so.

I only did 5 yrs and that is like 400 or worse he hung a queen for no reason and didn't take back when I took him... so

And ya he basically played random moves... e4 f5 happened once, mated him in about 5...